\begin{table}%t2 \caption{\label{t:etocho-g}Transitions of the \textit{gauche}-conformer of ethyl formate observed with the IRAM 30~m telescope toward Sgr~B2(N). The horizontal lines mark discontinuities in the observed frequency coverage. Only the transitions associated with a modeled line stronger than 20~mK are listed.} %\centering \small \begin{tabular}{rlrrrrrl} \hline\hline \multicolumn{1}{c}{$N^a$} & \multicolumn{1}{c}{Transition$^b$} & \multicolumn{1}{c}{Frequency} & \multicolumn{1}{c}{Unc.$^c$} & \multicolumn{1}{c}{$E_{\rm l}$$^d$} & \multicolumn{1}{c}{$S\mu^2$} & \multicolumn{1}{c}{$\sigma^e$} & \multicolumn{1}{c}{Comments} \\ & & \multicolumn{1}{c}{\scriptsize (MHz)} & \multicolumn{1}{c}{\scriptsize (kHz)} & \multicolumn{1}{c}{\scriptsize (K)} & \multicolumn{1}{c}{\scriptsize (D$^2$)} & \multicolumn{1}{c}{\scriptsize (mK)} & \\ \multicolumn{1}{c}{(1)} & \multicolumn{1}{c}{(2)} & \multicolumn{1}{c}{(3)} & \multicolumn{1}{c}{(4)} & \multicolumn{1}{c}{(5)} & \multicolumn{1}{c}{(6)} & \multicolumn{1}{c}{(7)} & \multicolumn{1}{c}{(8)} \\ \hline 1 & 14$_{ 7, 8}$--13$_{ 7, 7}$ & 99~252.267 & 9 & 140 & 43.9 & 19 & Blend with a(CH$_2$OH)$_2$ and C$_2$H$_5$CN \\ 2 & 14$_{ 7, 7}$--13$_{ 7, 6}$ & 99~252.460 & 9 & 140 & 43.9 & 19 & Blend with a(CH$_2$OH)$_2$ and C$_2$H$_5$CN \\ 3 & 16$_{ 1,16}$--15$_{ 1,15}$ & 104~834.473 & 10 & 132 & 66.3 & 25 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 4 & 16$_{ 0,16}$--15$_{ 0,15}$ & 104~848.839 & 10 & 132 & 66.3 & 25 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 5 & 15$_{ 9, 7}$--14$_{ 9, 6}$$^\star$ & 106~216.238 & 9 & 154 & 40.2 & 25 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 7 & 15$_{ 8, 8}$--14$_{ 8, 7}$$^\star$ & 106~286.532 & 9 & 149 & 44.9 & 25 & Blend with $U$-line \\ 9 & 15$_{ 7, 9}$--14$_{ 7, 8}$ & 106~400.093 & 9 & 144 & 49.1 & 25 & Blend with $U$-line \\ 10 & 15$_{ 7, 8}$--14$_{ 7, 7}$ & 106~400.593 & 9 & 144 & 49.1 & 25 & Blend with $U$-line \\ 11 & 15$_{ 2,13}$--14$_{ 2,12}$ & 107~933.484 & 100 & 131 & 60.9 & 46 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1, C$_3$H$_7$CN, and $U$-line \\ 12 & 15$_{ 4,11}$--14$_{ 4,10}$ & 108~497.732 & 10 & 134 & 58.3 & 20 & Blend with C$_2$H$_5$CN and $U$-line \\ 13 & 16$_{ 2,15}$--15$_{ 2,14}$ & 108~858.373 & 9 & 135 & 65.2 & 20 & Blend with $^{13}$CN in absorption, CH$_3$CH$_3$CO, $\varv_t$ = 1, and $U$-line \\ 14 & 16$_{ 1,15}$--15$_{ 1,14}$ & 109~206.256 & 100 & 135 & 65.3 & 29 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 15 & 15$_{ 3,12}$--14$_{ 3,11}$ & 110~117.142 & 10 & 133 & 60.4 & 24 & Blend with $U$-lines \\ 16 & 17$_{ 1,17}$--16$_{ 1,16}$ & 111~255.183 & 100 & 137 & 70.5 & 35 & Blend with CH$_3$OH \\ 17 & 17$_{ 0,17}$--16$_{ 0,16}$ & 111~263.830 & 100 & 137 & 70.5 & 35 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 and $^{13}$CH$_3$CH$_2$CN \\ 18 & 16$_{ 3,14}$--15$_{ 3,13}$ & 112~186.512 & 8 & 137 & 64.2 & 42 & Blend with CH$_2$$^{13}$CHCN \\ 19 & 16$_{10, 6}$--15$_{10, 5}$$^\star$ & 113~276.855 & 9 & 165 & 40.8 & 28 & Blend with CH$_3$OCH$_3$ \\ 21 & 16$_{ 9, 8}$--15$_{ 9, 7}$$^\star$ & 113~332.031 & 9 & 159 & 45.8 & 28 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and CH$_2$$^{13}$CHCN \\ 23 & 16$_{ 8, 9}$--15$_{ 8, 8}$$^\star$ & 113~419.845 & 9 & 154 & 50.2 & 28 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1 \\ 25 & 46$_{10,37}$--46$_{ 9,38}$ & 113~560.008 & 23 & 488 & 62.8 & 28 & Strong CN in absorption \\ 26 & 16$_{ 7,10}$--15$_{ 7, 9}$ & 113~560.122 & 9 & 150 & 54.1 & 28 & Strong CN in absorption \\ 27 & 16$_{ 7, 9}$--15$_{ 7, 8}$ & 113~561.324 & 9 & 150 & 54.1 & 28 & Strong CN in absorption \\ 28 & 16$_{ 6,11}$--15$_{ 6,10}$ & 113~783.618 & 9 & 146 & 57.5 & 34 & Blend with $U$-line \\ 29 & 16$_{ 6,10}$--15$_{ 6, 9}$ & 113~810.530 & 9 & 146 & 57.5 & 34 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 \\ 30 & 16$_{ 4,13}$--15$_{ 4,12}$ & 113~866.411 & 9 & 139 & 62.7 & 34 & Blend with a-C$_2$H$_5$OCHO and $U$-line \\ 31 & 16$_{ 5,12}$--15$_{ 5,11}$ & 114~054.354 & 9 & 142 & 60.4 & 33 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 \\ 32 & 16$_{ 2,14}$--15$_{ 2,13}$ & 114~356.265 & 100 & 137 & 64.9 & 33 & Blend with CH$_3$CH$_3$CO and $U$-line \\ 33 & 16$_{ 5,11}$--15$_{ 5,10}$ & 114~420.852 & 100 & 142 & 60.4 & 37 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ 34 & 42$_{ 6,36}$--42$_{ 5,37}$ & 115~318.413 & 41 & 411 & 44.6 & 60 & Strong CO \\ 35 & 17$_{ 2,16}$--16$_{ 2,15}$ & 115~319.089 & 9 & 140 & 69.4 & 60 & Strong CO \\ 36 & 17$_{ 1,16}$--16$_{ 1,15}$ & 115~551.954 & 100 & 140 & 69.4 & 60 & Blend with C$_2$H$_3$CN \\ \hline %&&&&&&& \\[-8pt] 37 & 22$_{ 1,21}$--21$_{ 2,20}$ & 147~415.492 & 100 & 171 & 37.3 & 31 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1 and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 38 & 9$_{ 7, 3}$-- 8$_{ 6, 2}$$^\star$ & 147~431.313 & 18 & 117 & 14.5 & 31 & Blend with C$_2$H$_5$OH and CH$_3$CN, $\varv_8$ = 1 \\ 40 & 9$_{ 7, 3}$-- 8$_{ 6, 3}$$^\star$ & 147~431.321 & 18 & 117 & 0.9 & 31 & Blend with C$_2$H$_5$OH and CH$_3$CN, $\varv_8$ = 1 \\ 42 & 22$_{ 2,21}$--21$_{ 2,20}$ & 147~454.440 & 100 & 171 & 90.3 & 31 & Blend with a(CH$_2$OH)$_2$, CH$_3$$^{13}$CN, $\varv_8$ = 1, and CH$_3$OCH$_3$ \\ 43 & 22$_{ 1,21}$--21$_{ 1,20}$ & 147~479.064 & 100 & 171 & 90.3 & 31 & Blend with CH$_3$CN, $\varv_8$ = 1 and $^{13}$CH$_3$CH$_2$CN \\ 44 & 22$_{ 2,21}$--21$_{ 1,20}$ & 147~517.966 & 100 & 171 & 37.3 & 31 & Blend with CH$_3$$^{13}$CN, $\varv_8$ = 1 and CH$_3$CN, $\varv_8$ = 1 \\ \hline 45 & 10$_{ 7, 4}$-- 9$_{ 6, 3}$$^\star$ & 154~495.310 & 18 & 120 & 14.6 & 112 & Blend with C$_2$H$_5$CN \\ 47 & 10$_{ 7, 4}$-- 9$_{ 6, 4}$$^\star$ & 154~495.348 & 18 & 120 & 0.9 & 112 & Blend with C$_2$H$_5$CN \\ \hline 49 & 23$_{ 9,15}$--22$_{ 9,14}$ & 163~354.580 & 7 & 205 & 81.5 & 38 & Group possibly detected, partial blend with c-C$_2$H$_4$O, uncertain \\ & & & & & & & baseline \\ 50 & 23$_{ 9,14}$--22$_{ 9,13}$ & 163~355.083 & 7 & 205 & 81.5 & 38 & Group possibly detected, partial blend with c-C$_2$H$_4$O, uncertain \\ & & & & & & & baseline \\ 51 & 23$_{ 3,20}$--22$_{ 3,19}$ & 163~550.748 & 100 & 184 & 93.0 & 38 & Blend with CH$_3$OCHO, $\varv_{{\rm t}}$ = 1 and CH$_2$CH$^{13}$CN \\ 52 & 23$_{ 8,16}$--22$_{ 8,15}$ & 163~648.730 & 7 & 199 & 84.6 & 38 & Blend with C$_3$H$_7$CN and NH$_2$$^{13}$CHO \\ 53 & 23$_{ 8,15}$--22$_{ 8,14}$ & 163~658.516 & 7 & 199 & 84.6 & 38 & Blend with C$_3$H$_7$CN, uncertain baseline \\ \hline 54 & 24$_{ 5,19}$--23$_{ 5,18}$ & 176~014.876 & 9 & 196 & 96.4 & 365 & Blend with CH$_3$OCHO, CH$_2$CH$^{13}$CN, and HNCO, $\varv_5$ = 1 \\ \hline %&&&&&&& \\[-8pt] 55 & 19$_{ 6,14}$--18$_{ 5,13}$ & 202~061.374 & 15 & 160 & 13.8 & 138 & Blend with CH$_3$$^{13}$CN \\ 56 & 15$_{ 8, 8}$--14$_{ 7, 7}$$^\star$ & 202~643.074 & 17 & 144 & 17.5 & 108 & Blend with CH$_3$CN, $\varv_8$ = 1 and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 58 & 15$_{ 8, 8}$--14$_{ 7, 8}$$^\star$ & 202~643.365 & 17 & 144 & 1.1 & 108 & Blend with CH$_3$CN, $\varv_8$ = 1 and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 60 & 30$_{ 2,28}$--29$_{ 3,27}$ & 202~805.197 & 7 & 241 & 47.3 & 138 & Blend with C$_2$H$_5$CN and CH$_3$$^{13}$CN, $\varv_8$ = 1 \\ 61 & 30$_{ 3,28}$--29$_{ 3,27}$ & 202~824.924 & 100 & 241 & 122.7 & 138 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 62 & 30$_{ 2,28}$--29$_{ 2,27}$ & 202~837.051 & 100 & 241 & 122.6 & 138 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 63 & 45$_{ 9,37}$--44$_{10,34}$ & 202~856.742 & 41 & 463 & 10.5 & 138 & Blend with CH$_3$CN, $\varv_8$ = 1 \\ 64 & 30$_{ 3,28}$--29$_{ 2,27}$ & 202~856.967 & 7 & 241 & 47.3 & 138 & Blend with CH$_3$CN, $\varv_8$ = 1 \\ 65 & 65$_{ 8,58}$--65$_{ 7,59}$ & 202~857.921 & 214 & 828 & 52.8 & 138 & Blend with CH$_3$CN, $\varv_8$ = 1 \\ 66 & 17$_{ 7,11}$--16$_{ 6,10}$ & 203~524.096 & 16 & 151 & 15.9 & 161 & Blend with CH$_3$CN, $\varv_8$ = 2 \\ 67 & 17$_{ 7,10}$--16$_{ 6,10}$ & 203~528.806 & 16 & 151 & 1.1 & 161 & Blend with CH$_3$CN, $\varv_8$ = 2 \\ 68 & 17$_{ 7,11}$--16$_{ 6,11}$ & 203~574.259 & 16 & 151 & 1.1 & 161 & Blend with CH$_3$CN, $\varv_8$ = 2 \\ 69 & 17$_{ 7,10}$--16$_{ 6,11}$ & 203~578.970 & 16 & 151 & 15.9 & 161 & Blend with CH$_3$CN, $\varv_8$ = 2 and C$_2$H$_5$CN, $\varv_{20}$ = 1 \\ 70 & 29$_{ 5,25}$--28$_{ 5,24}$ & 204~412.101 & 7 & 240 & 116.8 & 316 & Blend with $^{13}$CH$_3$CH$_2$CN and $U$-lines \\ 71 & 19$_{ 6,14}$--18$_{ 5,14}$ & 204~417.969 & 16 & 160 & 1.2 & 316 & Blend with $^{13}$CH$_3$CH$_2$CN and $U$-lines \\ \hline 72 & 59$_{17,43}$--59$_{16,44}$ & 205~092.813 & 17 & 774 & 72.3 & 100 & Strong C$_2$H$_5$CN, CH$_3$OCH$_3$, and CH$_3$$^{13}$CH$_2$CN \\ 73 & 28$_{ 5,23}$--27$_{ 5,22}$ & 205~093.048 & 8 & 232 & 113.5 & 100 & Strong C$_2$H$_5$CN, CH$_3$OCH$_3$, and CH$_3$$^{13}$CH$_2$CN \\ 74 & 31$_{ 1,30}$--30$_{ 2,29}$ & 205~095.436 & 11 & 245 & 57.4 & 100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 75 & 31$_{ 2,30}$--30$_{ 2,29}$ & 205~095.823 & 11 & 245 & 127.9 & 100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 76 & 31$_{ 1,30}$--30$_{ 1,29}$ & 205~096.091 & 11 & 245 & 127.9 & 100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 77 & 31$_{ 2,30}$--30$_{ 1,29}$ & 205~096.478 & 11 & 245 & 57.4 & 100 & Strong CH$_3$$^{13}$CH$_2$CN and CH$_3$OCH$_3$ \\ 78 & 29$_{18,11}$--28$_{18,10}$$^\star$ & 205~308.386 & 8 & 332 & 74.6 & 100 & Strong SO$_2$ \\ 80 & 29$_{17,12}$--28$_{17,11}$$^\star$ & 205~313.243 & 8 & 321 & 79.7 & 100 & Strong SO$_2$ and $U$-line? \\ 82 & 54$_{14,40}$--53$_{15,39}$$^\star$ & 205~317.032 & 22 & 650 & 15.2 & 100 & Strong SO$_2$ and $U$-line? \\ 84 & 29$_{19,11}$--28$_{19,10}$ & 205~317.035 & 9 & 343 & 69.3 & 100 & Strong SO$_2$ and $U$-line? \\ 85 & 29$_{16,13}$--28$_{16,12}$$^\star$ & 205~334.455 & 8 & 311 & 84.4 & 100 & Strong CH$_3$$^{13}$CH$_2$CN \\ 87 & 29$_{20, 9}$--28$_{20, 8}$$^\star$ & 205~337.037 & 9 & 355 & 63.6 & 100 & Strong CH$_3$$^{13}$CH$_2$CN \\ 89 & 29$_{21, 8}$--28$_{21, 7}$$^\star$ & 205~366.726 & 10 & 368 & 57.7 & 100 & Blend with C$_2$H$_5$$^{13}$CN \\ 91 & 29$_{15,14}$--28$_{15,13}$$^\star$ & 205~375.865 & 8 & 301 & 88.9 & 100 & Strong C$_2$H$_5$CN \\ 93 & 29$_{14,15}$--28$_{14,14}$$^\star$ & 205~442.791 & 7 & 292 & 93.1 & 100 & Blend with CH$_3$$^{13}$CH$_2$CN and C$_2$H$_5$$^{13}$CN \\ 95 & 29$_{13,17}$--28$_{13,16}$$^\star$ & 205~542.814 & 7 & 284 & 97.0 & 271 & Blend with $U$-line \\ 97 & 29$_{12,18}$--28$_{12,17}$$^\star$ & 205~687.132 & 7 & 276 & 100.6 & 271 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1, uncertain baseline \\ 99 & 29$_{27, 2}$--28$_{27, 1}$$^\star$ & 205~690.300 & 20 & 456 & 16.2 & 271 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1, uncertain baseline \\ 101 & 29$_{11,19}$--28$_{11,18}$$^\star$ & 205~893.033 & 7 & 269 & 103.9 & 271 & Blend with C$_2$H$_5$$^{13}$CN \\ 103 & 29$_{10,20}$--28$_{10,19}$ & 206~188.338 & 7 & 263 & 106.9 & 280 & Blend with SO and $^{13}$CH$_2$CHCN \\ 104 & 29$_{10,19}$--28$_{10,18}$ & 206~190.002 & 7 & 263 & 106.9 & 280 & Blend with SO and $^{13}$CH$_2$CHCN \\ 105 & 29$_{ 4,25}$--28$_{ 4,24}$ & 206~280.705 & 100 & 240 & 117.1 & 280 & Blend with C$_2$H$_5$CN and C$_2$H$_5$CN, $\varv_{20}$ = 1 \\ 106 & 29$_{ 9,21}$--28$_{ 9,20}$ & 206~614.666 & 7 & 257 & 109.6 & 106 & Strong C$_2$H$_5$CN and CH$_3$OCHO \\ 107 & 29$_{ 9,20}$--28$_{ 9,19}$ & 206~639.557 & 7 & 257 & 109.6 & 106 & Blend with $U$-lines \\ 108 & 56$_{17,40}$--56$_{16,40}$ & 206~650.461 & 14 & 715 & 2.7 & 106 & Blend with C$_2$H$_5$CN \\ 109 & 56$_{17,39}$--56$_{16,40}$ & 206~650.601 & 14 & 715 & 67.2 & 106 & Blend with C$_2$H$_5$CN \\ 110 & 56$_{17,40}$--56$_{16,41}$ & 206~652.471 & 14 & 715 & 67.2 & 106 & Blend with C$_2$H$_5$CN \\ 111 & 56$_{17,39}$--56$_{16,41}$ & 206~652.612 & 14 & 715 & 2.7 & 106 & Blend with C$_2$H$_5$CN \\ 112 & 30$_{ 3,27}$--29$_{ 4,26}$ & 206~654.482 & 7 & 246 & 38.8 & 106 & Blend with C$_2$H$_5$CN \\ 113 & 29$_{ 6,24}$--28$_{ 6,23}$ & 206~929.917 & 8 & 244 & 115.8 & 117 & Strong C$_2$H$_5$CN, $\varv_{20}$ = 1 and C$_2$H$_5$CN \\ 114 & 30$_{ 4,27}$--29$_{ 4,26}$ & 206~996.130 & 100 & 246 & 121.8 & 117 & Blend with OCS, $\varv_2$ = 1 and NH$_2$$^{13}$CHO \\ 115 & 28$_{ 5,24}$--27$_{ 4,23}$ & 207~002.205 & 100 & 230 & 24.1 & 117 & Blend with OCS, $\varv_2$ = 1 and NH$_2$$^{13}$CHO \\ 116 & 30$_{ 3,27}$--29$_{ 3,26}$ & 207~175.063 & 100 & 246 & 121.8 & 117 & Blend with $U$-line \\ 117 & 29$_{ 8,22}$--28$_{ 8,21}$ & 207~183.249 & 7 & 252 & 112.1 & 117 & Blend with $U$-line \\ 118 & 12$_{10, 2}$--11$_{ 9, 3}$$^\star$ & 207~240.583 & 16 & 141 & 21.0 & 117 & Blend with CH$_3$OCHO and $U$-line \\ 120 & 12$_{10, 2}$--11$_{ 9, 2}$$^\star$ & 207~240.583 & 16 & 141 & 1.2 & 117 & Blend with CH$_3$OCHO and $U$-line \\ 122 & 32$_{ 0,32}$--31$_{ 0,31}$$^\star$ & 207~408.086 & 100 & 249 & 133.2 & 282 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 124 & 32$_{ 0,32}$--31$_{ 1,31}$$^\star$ & 207~408.141 & 17 & 249 & 67.2 & 282 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 126 & 29$_{ 8,21}$--28$_{ 8,20}$ & 207~451.586 & 7 & 252 & 112.1 & 282 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and C$_2$H$_5$OH \\ 127 & 30$_{ 4,27}$--29$_{ 3,26}$ & 207~516.619 & 7 & 246 & 38.8 & 282 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1 and $U$-line \\ 128 & 29$_{ 7,23}$--28$_{ 7,22}$ & 207~601.807 & 8 & 247 & 114.2 & 282 & Strong NH$_2$CHO, $\varv_{12}$ = 1 and C$_2$H$_3$CN \\ 129 & 20$_{ 6,15}$--19$_{ 5,14}$ & 207~703.938 & 15 & 166 & 13.7 & 282 & Blend with CH$_3$OCH$_3$ \\ 130 & 14$_{ 9, 6}$--13$_{ 8, 5}$$^\star$ & 208~513.304 & 16 & 144 & 19.3 & 168 & Blend with C$_2$H$_5$OH and C$_2$H$_3$CN \\ 132 & 14$_{ 9, 5}$--13$_{ 8, 6}$$^\star$ & 208~513.306 & 16 & 144 & 19.3 & 168 & Blend with C$_2$H$_5$OH and C$_2$H$_3$CN \\ 134 & 31$_{ 2,29}$--30$_{ 3,28}$ & 209~205.202 & 8 & 251 & 49.5 & 58 & Strong H$_2$CS and C$_2$H$_3$CN, $\varv_{15}$ = 1 \\ 135 & 31$_{ 3,29}$--30$_{ 3,28}$ & 209~217.484 & 100 & 251 & 126.8 & 58 & Strong C$_2$H$_3$CN, $\varv_{15}$ = 1, CH$_3$OCHO, and HC$_3$N \\ 136 & 31$_{ 2,29}$--30$_{ 2,28}$ & 209~225.073 & 100 & 251 & 126.8 & 58 & Strong CH$_3$OCHO and HC$_3$N \\ 137 & 31$_{ 3,29}$--30$_{ 2,28}$ & 209~237.276 & 8 & 251 & 49.5 & 58 & Strong HC$_3$N \\ 138 & 74$_{18,56}$--74$_{17,57}$$^\star$ & 209~239.716 & 197 & 1125 & 97.1 & 58 & Strong HC$_3$N \\ 140 & 29$_{ 7,22}$--28$_{ 7,21}$ & 209~426.660 & 9 & 248 & 114.3 & 58 & Strong CH$_3$OCH$_3$ and CH$_3$CH$_3$CO \\ 141 & 16$_{ 8, 9}$--15$_{ 7, 8}$$^\star$ & 209~662.326 & 16 & 150 & 17.7 & 45 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1, HC$^{13}$CCN, $\varv_7$ = 2, and HCC$^{13}$CN, $\varv_7$ = 2 \\ 143 & 16$_{ 8, 9}$--15$_{ 7, 9}$$^\star$ & 209~663.117 & 16 & 150 & 1.2 & 45 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1, HC$^{13}$CCN, $\varv_7$ = 2, and HCC$^{13}$CN, $\varv_7$ = 2 \\ 145 & 18$_{ 7,12}$--17$_{ 6,11}$ & 210~394.041 & 16 & 157 & 16.0 & 64 & Blend with C$_2$H$_5$OH and CH$_3$OCHO \\ 146 & 18$_{ 7,11}$--17$_{ 6,12}$ & 210~507.031 & 16 & 157 & 16.0 & 64 & Strong HC$_3$N, $\varv_7$ = 2 \\ 147 & 41$_{17,24}$--41$_{16,25}$$^\star$ & 210~945.438 & 10 & 465 & 43.1 & 37 & Strong NH$_2$$^{13}$CHO and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 149 & 41$_{17,25}$--41$_{16,26}$$^\star$ & 210~945.438 & 10 & 465 & 43.1 & 37 & Strong NH$_2$$^{13}$CHO and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 151 & 30$_{ 5,26}$--29$_{ 5,25}$ & 210~948.194 & 7 & 250 & 121.0 & 37 & Strong NH$_2$$^{13}$CHO and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 152 & 29$_{ 5,25}$--28$_{ 4,24}$ & 211~213.126 & 100 & 240 & 26.6 & 33 & Strong H$_2$CO in absorption \\ 153 & 32$_{ 1,31}$--31$_{ 2,30}$ & 211~492.742 & 12 & 255 & 59.6 & 33 & Strong CH$_3$OCH$_3$ \\ 154 & 32$_{ 2,31}$--31$_{ 2,30}$ & 211~492.971 & 12 & 255 & 132.0 & 33 & Strong CH$_3$OCH$_3$ \\ 155 & 32$_{ 1,31}$--31$_{ 1,30}$ & 211~493.129 & 12 & 255 & 132.0 & 33 & Strong CH$_3$OCH$_3$ \\ 156 & 32$_{ 2,31}$--31$_{ 1,30}$ & 211~493.358 & 12 & 255 & 59.6 & 33 & Strong CH$_3$OCH$_3$ \\ 157 & 29$_{ 5,24}$--28$_{ 5,23}$ & 211~817.880 & 100 & 242 & 117.5 & 47 & Blend with CH$_3$OH, $\varv_t$ = 1 and $U$-line \\ \hline 158 & 18$_{17, 1}$--18$_{16, 2}$$^\star$ & 211~857.177 & 16 & 231 & 4.4 & 47 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 and $U$-line \\ 160 & 29$_{17,12}$--29$_{16,13}$$^\star$ & 211~859.692 & 10 & 320 & 24.2 & 47 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 and $U$-line \\ 162 & 29$_{17,12}$--29$_{16,14}$$^\star$ & 211~859.692 & 10 & 320 & 1.2 & 47 & Blend with C$_2$H$_3$CN, $\varv_{15}$ = 1 and $U$-line \\ 164 & 28$_{17,11}$--28$_{16,12}$$^\star$ & 211~880.904 & 10 & 311 & 22.6 & 47 & Blend with CH$_2$CH$^{13}$CN \\ 166 & 28$_{17,11}$--28$_{16,13}$$^\star$ & 211~880.904 & 10 & 311 & 1.1 & 47 & Blend with CH$_2$CH$^{13}$CN \\ 168 & 27$_{17,10}$--27$_{16,11}$$^\star$ & 211~896.387 & 11 & 301 & 20.9 & 47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 170 & 27$_{17,10}$--27$_{16,12}$$^\star$ & 211~896.387 & 11 & 301 & 1.0 & 47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 172 & 21$_{17, 4}$--21$_{16, 5}$$^\star$ & 211~896.595 & 13 & 251 & 10.4 & 47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 174 & 21$_{17, 4}$--21$_{16, 6}$$^\star$ & 211~896.595 & 13 & 251 & 0.5 & 47 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 and C$_2$H$_5$OH \\ 176 & 22$_{17, 5}$--22$_{16, 6}$$^\star$ & 211~905.280 & 13 & 259 & 12.2 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 178 & 22$_{17, 5}$--22$_{16, 7}$$^\star$ & 211~905.280 & 13 & 259 & 0.6 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 180 & 26$_{17,10}$--26$_{16,11}$$^\star$ & 211~906.656 & 11 & 292 & 19.2 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 182 & 26$_{17,10}$--26$_{16,10}$ & 211~906.656 & 11 & 292 & 0.9 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 183 & 26$_{17, 9}$--26$_{16,10}$ & 211~906.776 & 100 & 292 & 19.2 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 184 & 23$_{17, 6}$--23$_{16, 7}$$^\star$ & 211~911.066 & 12 & 266 & 14.0 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 186 & 23$_{17, 6}$--23$_{16, 8}$$^\star$ & 211~911.066 & 12 & 266 & 0.7 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 188 & 25$_{17, 8}$--25$_{16, 9}$$^\star$ & 211~912.208 & 11 & 283 & 17.5 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 190 & 25$_{17, 8}$--25$_{16,10}$$^\star$ & 211~912.208 & 11 & 283 & 0.9 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 192 & 24$_{17, 8}$--24$_{16, 9}$$^\star$ & 211~913.523 & 12 & 275 & 15.8 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 194 & 24$_{17, 8}$--24$_{16, 8}$ & 211~913.523 & 12 & 275 & 0.8 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 195 & 24$_{17, 7}$--24$_{16, 8}$ & 211~913.626 & 100 & 275 & 15.8 & 47 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{11}$ = 1, and $U$-line \\ 196 & 20$_{ 6,14}$--19$_{ 5,15}$ & 212~146.465 & 17 & 166 & 13.4 & 36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 197 & 30$_{ 4,26}$--29$_{ 4,25}$ & 212~369.981 & 100 & 249 & 121.2 & 36 & Blend with $U$-line, NH$_2$$^{13}$CHO, $\varv_{12}$ = 1, and C$_3$H$_7$CN, uncertain \\ & & & & & & & baseline \\ 198 & 30$_{18,12}$--29$_{18,11}$$^\star$ & 212~385.195 & 8 & 341 & 80.3 & 36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 200 & 71$_{18,54}$--71$_{17,55}$ & 212~386.233 & 123 & 1051 & 91.5 & 36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 201 & 30$_{19,11}$--29$_{19,10}$$^\star$ & 212~390.341 & 8 & 353 & 75.2 & 36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 203 & 30$_{17,13}$--29$_{17,12}$$^\star$ & 212~394.782 & 8 & 331 & 85.2 & 36 & Strong NH$_2$CHO, $\varv_{12}$ = 1 \\ 205 & 30$_{20,11}$--29$_{20,10}$$^\star$ & 212~407.836 & 9 & 365 & 69.7 & 36 & Blend with NH$_2$$^{13}$CHO, $\varv_{12}$ = 1 and CH$_3$CH$_3$CO, $\varv_t$ = 1 \\ 207 & 30$_{16,14}$--29$_{16,13}$$^\star$ & 212~422.256 & 8 & 320 & 89.8 & 36 & Strong NH$_2$CHO \\ 209 & 30$_{21, 9}$--29$_{21, 8}$$^\star$ & 212~435.843 & 9 & 377 & 64.0 & 36 & Strong NH$_2$CHO \\ 211 & 30$_{15,15}$--29$_{15,14}$$^\star$ & 212~471.882 & 8 & 311 & 94.1 & 99 & Blend with C$_2$H$_5$OH, CH$_3$OCHO, and C$_3$H$_7$CN \\ 213 & 30$_{22, 8}$--29$_{22, 7}$$^\star$ & 212~472.920 & 10 & 391 & 58.0 & 99 & Blend with C$_2$H$_5$OH, CH$_3$OCHO, and C$_3$H$_7$CN \\ 215 & 30$_{14,17}$--29$_{14,16}$$^\star$ & 212~549.578 & 7 & 302 & 98.2 & 99 & Blend with NH$_2$$^{13}$CHO and $U$-line \\ 217 & 29$_{ 6,23}$--28$_{ 6,22}$ & 212~550.033 & 10 & 244 & 116.6 & 99 & Blend with NH$_2$$^{13}$CHO and $U$-line \\ 218 & 30$_{13,17}$--29$_{13,16}$$^\star$ & 212~663.809 & 7 & 294 & 102.0 & 99 & Blend with C$_2$H$_5$OH and $^{13}$CH$_2$CHCN \\ 220 & 30$_{12,19}$--29$_{12,18}$$^\star$ & 212~827.135 & 7 & 286 & 105.4 & 99 & Strong $^{13}$CH$_2$CHCN and NH$_2$CHO \\ 222 & 30$_{28, 3}$--29$_{28, 2}$$^\star$ & 212~834.203 & 100 & 482 & 16.2 & 99 & Strong $^{13}$CH$_2$CHCN and NH$_2$CHO \\ 224 & 21$_{ 6,16}$--20$_{ 5,15}$ & 212~845.604 & 15 & 173 & 13.7 & 99 & Blend with $^{13}$CH$_2$CHCN, uncertain baseline \\ 225 & 11$_{11, 1}$--10$_{10, 0}$$^\star$ & 212~997.517 & 100 & 143 & 23.2 & 99 & Blend with C$_2$H$_5$CN \\ 227 & 11$_{11, 0}$--10$_{10, 0}$$^\star$ & 212~997.572 & 16 & 143 & 1.3 & 99 & Blend with C$_2$H$_5$CN \\ 229 & 30$_{11,20}$--29$_{11,19}$ & 213~059.055 & 7 & 279 & 108.7 & 48 & Strong SO$_2$ \\ 230 & 30$_{11,19}$--29$_{11,18}$ & 213~059.228 & 7 & 279 & 108.7 & 48 & Strong SO$_2$ \\ 231 & 31$_{ 3,28}$--30$_{ 4,27}$ & 213~169.983 & 7 & 255 & 41.1 & 48 & Strong C$_2$H$_3$CN, $\varv_{11}$ = 1 \\ 232 & 30$_{10,21}$--29$_{10,20}$ & 213~390.877 & 7 & 273 & 111.6 & 48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, uncertain baseline \\ 233 & 31$_{ 4,28}$--30$_{ 4,27}$ & 213~392.357 & 7 & 255 & 125.9 & 48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, uncertain baseline \\ 234 & 30$_{10,20}$--29$_{10,19}$ & 213~394.012 & 7 & 273 & 111.6 & 48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, uncertain baseline \\ 235 & 16$_{ 4,13}$--15$_{ 1,14}$ & 213~509.497 & 41 & 135 & 0.8 & 48 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 236 & 31$_{ 3,28}$--30$_{ 3,27}$ & 213~511.580 & 100 & 255 & 125.9 & 48 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and $U$-line \\ 237 & 31$_{ 4,28}$--30$_{ 3,27}$ & 213~733.932 & 7 & 255 & 41.1 & 48 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 238 & 30$_{ 6,25}$--29$_{ 6,24}$ & 213~791.953 & 100 & 253 & 120.1 & 48 & Blend with CH$_3$CH$_3$CO, $\varv_t$ = 1, C$_2$H$_3$CN, $\varv_{15}$ = 1, and $U$-line \\ 239 & 33$_{ 0,33}$--32$_{ 1,32}$$^\star$ & 213~807.575 & 17 & 259 & 69.4 & 48 & Blend with C$_2$H$_5$CN \\ 241 & 33$_{ 0,33}$--32$_{ 0,32}$$^\star$ & 213~807.621 & 100 & 259 & 137.4 & 48 & Blend with C$_2$H$_5$CN \\ 243 & 30$_{ 9,22}$--29$_{ 9,21}$ & 213~865.943 & 7 & 267 & 114.2 & 48 & Blend with C$_2$H$_5$OH and C$_2$H$_5$$^{13}$CN \\ 244 & 30$_{ 9,21}$--29$_{ 9,20}$ & 213~909.016 & 7 & 267 & 114.2 & 48 & Blend with C$_3$H$_7$CN and $^{13}$CH$_3$OH \\ 245 & 13$_{10, 3}$--12$_{ 9, 4}$$^\star$ & 214~314.472 & 16 & 145 & 21.1 & 75 & Strong $^{13}$CH$_3$CN and C$_2$H$_5$$^{13}$CN \\ 247 & 13$_{10, 3}$--12$_{ 9, 3}$$^\star$ & 214~314.472 & 16 & 145 & 1.2 & 75 & Strong $^{13}$CH$_3$CN and C$_2$H$_5$$^{13}$CN \\ 249 & 30$_{ 8,23}$--29$_{ 8,22}$ & 214~467.553 & 8 & 262 & 116.6 & 75 & Blend with CH$_3$OCH$_3$ \\ 250 & 30$_{ 7,24}$--29$_{ 7,23}$ & 214~783.566 & 8 & 257 & 118.6 & 75 & Strong CH$_3$OCHO \\ 251 & 30$_{ 8,22}$--29$_{ 8,21}$ & 214~889.514 & 8 & 262 & 116.6 & 74 & Blend with $^{13}$CH$_2$CHCN \\ 252 & 31$_{ 4,27}$--30$_{ 5,26}$ & 214~982.375 & 100 & 260 & 31.4 & 74 & Strong C$_2$H$_5$$^{13}$CN and $^{13}$CH$_3$CN, $\varv_8$ = 1 \\ 253 & 15$_{ 9, 7}$--14$_{ 8, 6}$$^\star$ & 215~567.674 & 16 & 149 & 19.5 & 74 & Strong C$_2$H$_5$CN, $\varv_{20}$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 255 & 15$_{ 9, 7}$--14$_{ 8, 7}$$^\star$ & 215~567.680 & 16 & 149 & 1.2 & 74 & Strong C$_2$H$_5$CN, $\varv_{20}$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ \hline 257 & 32$_{ 2,30}$--31$_{ 3,29}$ & 215~600.637 & 8 & 261 & 51.8 & 74 & Strong C$_2$H$_5$CN \\ 258 & 32$_{ 3,30}$--31$_{ 3,29}$ & 215~608.230 & 100 & 261 & 131.0 & 74 & Strong C$_2$H$_5$CN \\ 259 & 32$_{ 2,30}$--31$_{ 2,29}$ & 215~612.952 & 100 & 261 & 131.0 & 74 & Strong C$_2$H$_5$CN \\ 260 & 32$_{ 3,30}$--31$_{ 2,29}$ & 215~620.426 & 8 & 261 & 51.8 & 74 & Strong C$_2$H$_5$CN \\ 261 & 36$_{ 9,27}$--36$_{ 6,30}$ & 215~623.049 & 44 & 336 & 2.1 & 74 & Strong C$_2$H$_5$CN \\ 262 & 30$_{ 5,26}$--29$_{ 4,25}$ & 215~880.577 & 100 & 249 & 29.1 & 55 & Strong $^{13}$CH$_3$OH \\ 263 & 17$_{ 8,10}$--16$_{ 7, 9}$ & 216~663.426 & 16 & 155 & 17.9 & 55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 264 & 17$_{ 8, 9}$--16$_{ 7, 9}$ & 216~663.574 & 16 & 155 & 1.2 & 55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 265 & 17$_{ 8,10}$--16$_{ 7,10}$ & 216~665.420 & 16 & 155 & 1.2 & 55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 266 & 17$_{ 8, 9}$--16$_{ 7,10}$ & 216~665.567 & 16 & 155 & 17.9 & 55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 267 & 61$_{ 4,57}$--61$_{ 4,58}$$^\star$ & 216~666.695 & 128 & 715 & 4.3 & 55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 269 & 61$_{ 5,57}$--61$_{ 4,58}$$^\star$ & 216~666.699 & 128 & 715 & 29.9 & 55 & Blend with C$_2$H$_5$OH, C$_3$H$_7$CN, and $U$-line \\ 271 & 19$_{ 7,13}$--18$_{ 6,12}$ & 217~192.379 & 16 & 163 & 16.1 & 50 & Strong CH$_3$OCH$_3$ \\ 272 & 30$_{ 7,23}$--29$_{ 7,22}$ & 217~285.278 & 10 & 258 & 118.8 & 50 & Blend with $^{13}$CN, CH$_2$$^{13}$CHCN, and $U$-line \\ 273 & 22$_{ 6,17}$--21$_{ 5,16}$ & 217~407.902 & 17 & 181 & 13.6 & 50 & Strong HC$^{13}$CCN, $^{13}$CH$_3$OH, HCC$^{13}$CN, and $^{13}$CN in absorption \\ 274 & 21$_{ 2,20}$--20$_{ 1,20}$ & 217~409.248 & 52 & 160 & 0.3 & 50 & Strong HC$^{13}$CCN, $^{13}$CH$_3$OH, HCC$^{13}$CN, and $^{13}$CN in absorption \\ 275 & 19$_{ 7,12}$--18$_{ 6,13}$ & 217~414.071 & 16 & 163 & 16.1 & 50 & Strong HCC$^{13}$CN and $^{13}$CN in absorption \\ 276 & 31$_{ 5,27}$--30$_{ 5,26}$ & 217~441.193 & 100 & 260 & 125.2 & 50 & Strong $^{13}$CN in absorption, CH$_2$$^{13}$CHCN, and CH$_2$CH$^{13}$CN \\ \hline 277 & 31$_{18,13}$--30$_{18,12}$$^\star$ & 219~461.424 & 8 & 352 & 86.0 & 92 & Strong C$_2$H$_5$CN \\ 279 & 31$_{19,12}$--30$_{19,11}$$^\star$ & 219~462.695 & 8 & 363 & 81.0 & 92 & Strong C$_2$H$_5$CN \\ 281 & 31$_{17,14}$--30$_{17,13}$$^\star$ & 219~476.189 & 8 & 341 & 90.7 & 92 & Strong NH$_2$CN \\ 283 & 31$_{20,11}$--30$_{20,10}$$^\star$ & 219~477.375 & 9 & 375 & 75.7 & 92 & Strong NH$_2$CN \\ 285 & 31$_{21,10}$--30$_{21, 9}$$^\star$ & 219~503.439 & 9 & 388 & 70.2 & 92 & Strong C$_2$H$_5$CN \\ 287 & 31$_{16,15}$--30$_{16,14}$$^\star$ & 219~510.475 & 8 & 331 & 95.1 & 92 & Strong C$_2$H$_5$CN \\ 289 & 31$_{22, 9}$--30$_{22, 8}$$^\star$ & 219~539.304 & 9 & 401 & 64.4 & 92 & Strong HNCO, $\varv_5$ = 1 and HNCO \\ 291 & 31$_{15,16}$--30$_{15,15}$$^\star$ & 219~569.004 & 8 & 321 & 99.3 & 92 & Strong C$^{18}$O \\ 293 & 62$_{17,46}$--61$_{18,43}$ & 219~569.366 & 161 & 836 & 17.0 & 92 & Strong C$^{18}$O \\ 294 & 62$_{17,45}$--61$_{18,44}$ & 219~572.725 & 161 & 836 & 17.0 & 92 & Strong C$^{18}$O \\ 295 & 31$_{24, 7}$--30$_{24, 6}$$^\star$ & 219~635.627 & 11 & 429 & 52.0 & 92 & Blend with C$_2$H$_5$CN, $\varv_{20}$ = 1 and CH$_3$CN, $\varv_4$ = 1 \\ 297 & 32$_{ 3,29}$--31$_{ 4,28}$ & 219~637.655 & 7 & 266 & 43.4 & 92 & Blend with C$_2$H$_5$CN, $\varv_{20}$ = 1 and CH$_3$CN, $\varv_4$ = 1 \\ 298 & 31$_{14,17}$--30$_{14,16}$$^\star$ & 219~658.346 & 7 & 312 & 103.2 & 92 & Strong NH$_2$CN and HNCO \\ 300 & 32$_{ 4,29}$--31$_{ 4,28}$ & 219~781.349 & 100 & 266 & 130.1 & 92 & Strong HNCO, $\varv_6$ = 1 and HNCO \\ 301 & 31$_{13,19}$--30$_{13,18}$$^\star$ & 219~787.930 & 7 & 304 & 106.9 & 92 & Strong HNCO \\ 303 & 21$_{ 6,15}$--20$_{ 5,16}$ & 219~793.028 & 100 & 173 & 13.1 & 92 & Strong HNCO \\ \hline 304 & 34$_{ 1,34}$--33$_{ 0,33}$$^\star$ & 220~205.386 & 100 & 270 & 71.6 & 98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 306 & 34$_{ 1,34}$--33$_{ 1,33}$$^\star$ & 220~205.400 & 17 & 270 & 141.6 & 98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 308 & 58$_{18,41}$--58$_{17,41}$$^\star$ & 220~209.432 & 15 & 764 & 2.8 & 98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 310 & 58$_{18,41}$--58$_{17,42}$$^\star$ & 220~209.852 & 15 & 764 & 68.8 & 98 & Strong HNCO, $\varv_5$ = 1 and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 312 & 31$_{11,21}$--30$_{11,20}$ & 220~231.977 & 7 & 289 & 113.4 & 98 & Blend with CH$_3$CN and $U$-line \\ 313 & 31$_{11,20}$--30$_{11,19}$ & 220~232.321 & 7 & 289 & 113.4 & 98 & Blend with CH$_3$CN and $U$-line \\ 314 & 31$_{ 6,26}$--30$_{ 6,25}$ & 220~580.985 & 100 & 264 & 124.3 & 98 & Strong CH$_3$$^{13}$CN and HNCO \\ 315 & 31$_{10,22}$--30$_{10,21}$ & 220~603.352 & 7 & 283 & 116.2 & 98 & Strong CH$_3$CN, CH$_3$$^{13}$CN, and C$_2$H$_5$OH \\ 316 & 62$_{ 4,58}$--62$_{ 3,59}$$^\star$ & 220~606.847 & 154 & 735 & 30.0 & 98 & Strong CH$_3$$^{13}$CN and C$_2$H$_5$OH \\ 318 & 62$_{ 5,58}$--62$_{ 4,59}$$^\star$ & 220~606.849 & 154 & 735 & 30.0 & 98 & Strong CH$_3$$^{13}$CN and C$_2$H$_5$OH \\ 320 & 31$_{10,21}$--30$_{10,20}$ & 220~609.106 & 7 & 283 & 116.2 & 98 & Strong CH$_3$$^{13}$CN and C$_2$H$_5$OH \\ \hline %&&&&&&& \\[-8pt] 321 & 33$_{ 3,30}$--32$_{ 4,29}$ & 226~072.922 & 7 & 276 & 45.7 & 278 & Blend with c-C$_2$H$_4$O and $^{13}$CH$_3$OH \\ 322 & 33$_{ 4,30}$--32$_{ 4,29}$ & 226~165.300 & 7 & 276 & 134.3 & 278 & Blend with CN in absorption and CH$_3$CH$_3$CO, $\varv_t$ = 1 \\ 323 & 33$_{ 3,30}$--32$_{ 3,29}$ & 226~216.618 & 100 & 276 & 134.3 & 278 & Blend with CH$_3$CH$_3$CO and CN in absorption \\ 324 & 33$_{ 4,30}$--32$_{ 3,29}$ & 226~309.069 & 7 & 276 & 45.8 & 278 & Strong CN in absorption \\ 325 & 32$_{ 5,28}$--31$_{ 4,27}$ & 226~357.720 & 9 & 270 & 34.1 & 278 & Strong CN in absorption \\ 326 & 32$_{19,13}$--31$_{19,12}$$^\star$ & 226~534.021 & 8 & 373 & 86.7 & 278 & Blend with CH$_2$NH \\ 328 & 32$_{18,15}$--31$_{18,14}$$^\star$ & 226~537.002 & 100 & 362 & 91.5 & 278 & Blend with CH$_2$NH \\ 330 & 32$_{20,13}$--31$_{20,12}$$^\star$ & 226~545.568 & 8 & 385 & 81.6 & 278 & Blend with CH$_2$NH \\ 332 & 32$_{17,15}$--31$_{17,14}$$^\star$ & 226~557.411 & 8 & 351 & 96.1 & 278 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 334 & 32$_{21,11}$--31$_{21,10}$$^\star$ & 226~569.424 & 9 & 398 & 76.2 & 278 & Blend with CH$_3$COOH, C$_2$H$_5$OH, and CN in absorption \\ 336 & 32$_{16,16}$--31$_{16,15}$$^\star$ & 226~599.078 & 8 & 341 & 100.4 & 278 & Blend with C$_2$H$_5$$^{13}$CN \\ 338 & 35$_{ 0,35}$--34$_{ 1,34}$$^\star$ & 226~601.560 & 18 & 280 & 73.8 & 278 & Blend with C$_2$H$_5$$^{13}$CN \\ 340 & 35$_{ 0,35}$--34$_{ 0,34}$$^\star$ & 226~601.561 & 18 & 280 & 145.8 & 278 & Blend with C$_2$H$_5$$^{13}$CN \\ 342 & 32$_{22,10}$--31$_{22, 9}$$^\star$ & 226~603.850 & 9 & 411 & 70.6 & 278 & Blend with C$_2$H$_5$$^{13}$CN \\ 344 & 32$_{15,17}$--31$_{15,16}$$^\star$ & 226~667.222 & 8 & 332 & 104.5 & 96 & Strong CN in absorption and C$_2$H$_5$OH \\ 346 & 32$_{14,18}$--31$_{14,17}$$^\star$ & 226~769.121 & 8 & 323 & 108.3 & 96 & Strong CN in absorption \\ 348 & 32$_{13,20}$--31$_{13,19}$$^\star$ & 226~915.261 & 8 & 314 & 111.8 & 96 & Strong CN in absorption \\ 350 & 32$_{12,21}$--31$_{12,20}$$^\star$ & 227~121.372 & 7 & 307 & 115.1 & 96 & Blend with C$_2$H$_5$CN, uncertain baseline \\ \hline 352 & 32$_{11,22}$--31$_{11,21}$ & 227~412.121 & 7 & 300 & 118.1 & 85 & Strong HC$_3$N \\ 353 & 32$_{11,21}$--31$_{11,20}$ & 227~412.786 & 7 & 300 & 118.1 & 85 & Strong HC$_3$N \\ 354 & 31$_{ 6,25}$--30$_{ 6,24}$ & 227~600.701 & 10 & 265 & 125.4 & 85 & Strong C$_2$H$_5$OH and NH$_2$CHO \\ 355 & 32$_{10,23}$--31$_{10,22}$ & 227~826.118 & 8 & 293 & 120.8 & 85 & Blend with CH$_3$OH \\ 356 & 32$_{10,22}$--31$_{10,21}$ & 227~836.414 & 8 & 293 & 120.8 & 85 & Blend with CH$_3$CH$_3$CO \\ 357 & 22$_{ 6,16}$--21$_{ 5,17}$ & 227~855.315 & 20 & 180 & 12.7 & 85 & Blend with HC$^{13}$CCN, $\varv_7$ = 2, HCC$^{13}$CN, $\varv_7$ = 2, and $U$-line \\ \hline 358 & 81$_{10,71}$--81$_{ 9,72}$$^\star$ & 231~205.772 & 1715 & 1244 & 77.8 & 183 & Strong $^{13}$CS and $U$-line \\ \hline 360 & 34$_{ 3,31}$--33$_{ 4,30}$ & 232~486.365 & 7 & 287 & 48.0 & 19 & Strong C$_2$H$_5$$^{13}$CN and C$_2$H$_5$OH \\ 361 & 34$_{ 4,31}$--33$_{ 4,30}$ & 232~545.336 & 50 & 287 & 138.4 & 19 & Blend uith C$_2$H$_5$CN and C$_2$H$_5$OH \\ 362 & 34$_{ 3,31}$--33$_{ 3,30}$ & 232~578.686 & 50 & 287 & 138.4 & 19 & Blend with CH$_3$$^{13}$CH$_2$CN and $^{13}$CH$_2$CHCN \\ 363 & 34$_{ 4,31}$--33$_{ 3,30}$ & 232~637.775 & 8 & 287 & 48.0 & 19 & Blend with CH$_3$OH, $\varv_t$ = 1, CH$_3$CH$_3$CO, and $^{13}$CH$_2$CO \\ 364 & 12$_{12, 0}$--11$_{11, 1}$$^\star$ & 232~895.717 & 15 & 153 & 25.4 & 19 & Blend with C$_2$H$_5$CN and $^{13}$CH$_3$CN, $\varv_8$ = 1 \\ 366 & 12$_{12, 0}$--11$_{11, 0}$$^\star$ & 232~895.717 & 15 & 153 & 1.4 & 19 & Blend with C$_2$H$_5$CN and $^{13}$CH$_3$CN, $\varv_8$ = 1 \\ \hline 368 & 33$_{10,24}$--32$_{10,23}$ & 235~059.537 & 50 & 304 & 125.4 & 131 & Strong CH$_3$OCHO and C$_2$H$_5$CN \\ 369 & 33$_{10,23}$--32$_{10,22}$ & 235~077.408 & 8 & 304 & 125.4 & 131 & Strong CH$_3$CH$_3$CO and C$_2$H$_5$OH \\ 370 & 16$_{10, 7}$--15$_{ 9, 6}$$^\star$ & 235~511.949 & 15 & 159 & 21.6 & 131 & Strong HC$^{13}$CCN \\ 372 & 16$_{10, 6}$--15$_{ 9, 7}$$^\star$ & 235~511.949 & 15 & 159 & 21.6 & 131 & Strong HC$^{13}$CCN \\ 374 & 33$_{ 9,25}$--32$_{ 9,24}$ & 235~683.207 & 50 & 299 & 127.8 & 131 & Blend with HCC$^{13}$CN, $\varv_5$ = 1/$\varv_7$ = 3 \\ 375 & 33$_{ 9,24}$--32$_{ 9,23}$ & 235~875.700 & 8 & 299 & 127.8 & 131 & Strong $^{13}$CH$_3$OH and CH$_3$OCHO \\ 376 & 34$_{ 4,30}$--33$_{ 5,29}$ & 235~952.121 & 100 & 292 & 39.0 & 131 & Strong C$_2$H$_5$$^{13}$CN, $^{13}$CH$_3$OH, and SiS \\ 377 & 33$_{ 7,27}$--32$_{ 7,26}$ & 236~011.028 & 50 & 289 & 131.6 & 131 & Strong $^{13}$CH$_3$OH \\ \hline %&&&&&&& \\[-8pt] 378 & 66$_{ 4,62}$--66$_{ 3,63}$$^\star$ & 236~269.468 & 357 & 816 & 30.1 & 37 & Blend with NH$_2$CH$_2$CN and H$_2$C$^{34}$S \\ 380 & 66$_{ 5,62}$--66$_{ 4,63}$$^\star$ & 236~269.469 & 357 & 816 & 30.1 & 37 & Blend with NH$_2$CH$_2$CN and H$_2$C$^{34}$S \\ 382 & 33$_{ 8,26}$--32$_{ 8,25}$ & 236~274.518 & 50 & 294 & 130.0 & 37 & Blend with NH$_2$CH$_2$CN and H$_2$C$^{34}$S \\ 383 & 23$_{ 6,17}$--22$_{ 5,18}$ & 236~483.115 & 100 & 188 & 12.0 & 37 & Blend with NH$_2$CH$_2$CN and CH$_2$$^{13}$CHCN \\ \hline %&&&&&&& \\[-8pt] 384 & 34$_{23,11}$--33$_{23,10}$$^\star$ & 240~768.473 & 9 & 447 & 77.2 & 216 & Strong CH$_3$$^{13}$CH$_2$CN, CH$_3$CH$_3$CO, and C$_2$H$_5$OH \\ 386 & 34$_{16,18}$--33$_{16,17}$$^\star$ & 240~777.277 & 8 & 363 & 110.8 & 216 & Strong CH$_3$$^{13}$CH$_2$CN, CH$_3$CH$_3$CO, and C$_2$H$_5$OH \\ 388 & 34$_{15,19}$--33$_{15,18}$$^\star$ & 240~866.895 & 8 & 354 & 114.6 & 216 & Strong C$_2$H$_5$CN and HNCO \\ 390 & 34$_{14,21}$--33$_{14,20}$$^\star$ & 240~996.801 & 8 & 345 & 118.2 & 216 & Strong C$_2$H$_5$$^{13}$CN, CH$_3$CH$_3$CO, and C$^{34}$S \\ 392 & 33$_{ 7,26}$--32$_{ 7,25}$ & 241~104.938 & 12 & 290 & 132.3 & 216 & Blend with CH$_3$$^{13}$CH$_2$CN and $U$-line \\ 393 & 36$_{ 2,34}$--35$_{ 3,33}$ & 241~154.165 & 10 & 304 & 60.8 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 394 & 36$_{ 3,34}$--35$_{ 3,33}$ & 241~155.214 & 10 & 304 & 147.7 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 395 & 36$_{ 2,34}$--35$_{ 2,33}$ & 241~155.889 & 10 & 304 & 147.7 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 396 & 36$_{ 3,34}$--35$_{ 2,33}$ & 241~156.938 & 10 & 304 & 60.8 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 397 & 34$_{29, 5}$--33$_{29, 4}$$^\star$ & 241~179.811 & 17 & 543 & 38.8 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 399 & 34$_{13,22}$--33$_{13,21}$$^\star$ & 241~179.912 & 8 & 337 & 121.5 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 401 & 65$_{ 3,62}$--65$_{ 2,63}$$^\star$ & 241~187.055 & 355 & 784 & 22.6 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ 403 & 65$_{ 3,62}$--65$_{ 3,63}$$^\star$ & 241~187.055 & 355 & 784 & 3.4 & 216 & Strong CH$_3$OH, $\varv_t$ = 1 \\ \hline %&&&&&&& \\[-8pt] 405 & 21$_{ 8,14}$--20$_{ 7,13}$ & 244~391.993 & 15 & 180 & 18.5 & 46 & Strong $^{13}$CH$_3$CH$_2$CN and C$_2$H$_5$CN \\ 406 & 21$_{ 8,13}$--20$_{ 7,13}$ & 244~396.589 & 15 & 180 & 1.4 & 46 & Strong $^{13}$CH$_3$CH$_2$CN and C$_2$H$_5$CN \\ 407 & 23$_{ 5,18}$--22$_{ 4,19}$ & 244~399.583 & 45 & 185 & 5.5 & 46 & Strong $^{13}$CH$_3$CH$_2$CN and C$_2$H$_5$CN \\ 408 & 21$_{ 8,14}$--20$_{ 7,14}$ & 244~437.241 & 15 & 180 & 1.4 & 46 & Blend with C$_2$H$_5$CN, C$_2$H$_5$OH, and $U$-line \\ 409 & 21$_{ 8,13}$--20$_{ 7,14}$ & 244~441.837 & 15 & 180 & 18.5 & 46 & Blend with C$_2$H$_5$CN, C$_2$H$_5$OH, and $U$-line \\ 410 & 23$_{ 7,16}$--22$_{ 6,17}$ & 245~129.808 & 16 & 191 & 16.1 & 72 & Strong CH$_2$NH \\ 411 & 36$_{ 3,33}$--35$_{ 4,32}$ & 245~273.854 & 100 & 310 & 52.6 & 72 & Strong HC$_3$N, $\varv_4$ = 1 and C$_2$H$_5$$^{13}$CN \\ 412 & 36$_{ 4,33}$--35$_{ 4,32}$ & 245~297.601 & 100 & 310 & 146.7 & 72 & Blend with CH$_3$CH$_3$CO and $^{34}$SO$_2$ \\ 413 & 36$_{ 3,33}$--35$_{ 3,32}$ & 245~311.367 & 100 & 310 & 146.7 & 72 & Blend with C$_2$H$_5$OH and SO$_2$ \\ 414 & 36$_{ 4,33}$--35$_{ 3,32}$ & 245~335.158 & 100 & 310 & 52.6 & 72 & Strong SO$_2$ \\ 415 & 34$_{ 8,26}$--33$_{ 8,25}$ & 245~447.840 & 11 & 305 & 134.4 & 72 & Strong C$_2$H$_5$OH, C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1, and $^{13}$CH$_3$CH$_2$CN \\ 416 & 38$_{ 0,38}$--37$_{ 0,37}$$^\star$ & 245~779.482 & 100 & 314 & 158.3 & 53 & Strong CH$_2$$^{13}$CHCN and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 418 & 38$_{ 0,38}$--37$_{ 1,37}$$^\star$ & 245~779.550 & 18 & 314 & 80.5 & 53 & Strong CH$_2$$^{13}$CHCN and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 420 & 24$_{ 6,18}$--23$_{ 5,19}$ & 245~842.016 & 26 & 196 & 11.2 & 53 & Blend with C$_2$H$_3$CN, $\varv_{11}$ = 1/$\varv_{15}$ = 1 \\ \hline 421 & 14$_{12, 2}$--13$_{11, 3}$$^\star$ & 247~059.416 & 14 & 162 & 25.4 & 68 & Strong CH$_3$OCHO \\ 423 & 14$_{12, 2}$--13$_{11, 2}$$^\star$ & 247~059.416 & 14 & 162 & 1.5 & 68 & Strong CH$_3$OCHO \\ 425 & 35$_{ 6,30}$--34$_{ 6,29}$ & 247~073.069 & 100 & 308 & 141.1 & 68 & Strong C$_2$H$_3$CN and CH$_2$$^{13}$CHCN \\ \hline 426 & 39$_{ 0,39}$--38$_{ 0,38}$$^\star$ & 252~168.489 & 100 & 326 & 162.5 & 42 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 428 & 39$_{ 0,39}$--38$_{ 1,38}$$^\star$ & 252~168.541 & 18 & 326 & 82.7 & 42 & Blend with C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 430 & 24$_{ 7,17}$--23$_{ 6,18}$ & 252~254.714 & 16 & 199 & 16.0 & 42 & Strong CH$_{3}$OH \\ \hline 431 & 25$_{ 7,19}$--24$_{ 6,18}$ & 254~026.124 & 15 & 207 & 16.1 & 32 & Strong CH$_3$OH in absorption, C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1, \\ & & & & & & & and HC$^{13}$CCN, $\varv_6$ = 1 \\ 432 & 15$_{12, 3}$--14$_{11, 4}$$^\star$ & 254~139.046 & 14 & 167 & 25.5 & 32 & Strong C$_2$H$_3$CN \\ 434 & 15$_{12, 3}$--14$_{11, 3}$$^\star$ & 254~139.046 & 14 & 167 & 1.5 & 32 & Strong C$_2$H$_3$CN \\ \hline 436 & 36$_{14,23}$--35$_{14,22}$$^\star$ & 255~232.834 & 8 & 368 & 127.8 & 217 & Strong CH$_3$OH \\ 438 & 17$_{11, 6}$--16$_{10, 7}$$^\star$ & 255~442.928 & 14 & 171 & 23.8 & 217 & Strong CH$_2$CH$^{13}$CN \\ 440 & 17$_{11, 6}$--16$_{10, 6}$$^\star$ & 255~442.928 & 14 & 171 & 1.4 & 217 & Strong CH$_2$CH$^{13}$CN \\ 442 & 36$_{13,24}$--35$_{13,23}$$^\star$ & 255~458.533 & 8 & 360 & 131.0 & 217 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 and CH$_2$$^{13}$CHCN \\ 444 & 37$_{ 4,33}$--36$_{ 5,32}$ & 255~646.981 & 8 & 327 & 46.2 & 217 & Strong H$^{13}$CCCN and NH$_2$CHO, $\varv_{12}$ = 1 \\ \hline 445 & 23$_{ 8,16}$--22$_{ 7,15}$ & 257~978.249 & 15 & 195 & 18.7 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 446 & 56$_{11,46}$--55$_{12,43}$ & 258~029.375 & 88 & 664 & 12.8 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 447 & 38$_{ 3,35}$--37$_{ 4,34}$ & 258~032.591 & 9 & 334 & 57.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 448 & 38$_{ 4,35}$--37$_{ 4,34}$ & 258~042.009 & 9 & 334 & 155.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 449 & 38$_{ 3,35}$--37$_{ 3,34}$ & 258~047.578 & 9 & 334 & 155.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 450 & 38$_{ 4,35}$--37$_{ 3,34}$ & 258~056.996 & 9 & 334 & 57.1 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 \\ 451 & 23$_{ 8,15}$--22$_{ 7,16}$ & 258~162.637 & 15 & 195 & 18.7 & 1127 & Strong $^{13}$CH$_3$OH and HC$^{15}$N \\ 452 & 36$_{ 9,27}$--35$_{ 9,26}$ & 258~237.747 & 10 & 334 & 141.2 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 and SO \\ 453 & 36$_{ 6,31}$--35$_{ 5,30}$ & 258~252.184 & 13 & 320 & 33.8 & 1127 & Strong CH$_3$CN, $\varv_8$ = 1 and SO \\ \hline %&&&&&&& \\[-8pt] 454 & 26$_{ 7,20}$--25$_{ 6,19}$ & 258~801.772 & 16 & 216 & 15.9 & 1609 & Strong CH$_3$$^{13}$CH$_2$CN \\ \hline 455 & 37$_{ 6,32}$--36$_{ 6,31}$ & 260~009.847 & 8 & 332 & 149.4 & 413 & Strong C$_2$H$_5$OH, CH$_2$$^{13}$CHCN, and CH$_3$OCH$_3$ \\ 456 & 39$_{ 2,37}$--38$_{ 3,36}$ & 260~297.586 & 10 & 340 & 67.4 & 413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 457 & 39$_{ 3,37}$--38$_{ 3,36}$ & 260~297.819 & 10 & 340 & 160.2 & 413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 458 & 39$_{ 2,37}$--38$_{ 2,36}$ & 260~297.972 & 10 & 340 & 160.2 & 413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ 459 & 39$_{ 3,37}$--38$_{ 2,36}$ & 260~298.205 & 10 & 340 & 67.4 & 413 & Strong C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ \hline %&&&&&&& \\[-8pt] 460 & 37$_{ 7,31}$--36$_{ 7,30}$ & 263~345.617 & 9 & 337 & 148.6 & 74 & Blend with HCC$^{13}$CN, $\varv_7$ = 1 \\ 461 & 37$_{ 6,32}$--36$_{ 5,31}$ & 263~354.897 & 11 & 332 & 36.3 & 74 & Blend with NH$_2$CH$_2$CN \\ 462 & 37$_{11,27}$--36$_{11,26}$ & 263~432.848 & 8 & 358 & 141.1 & 74 & Strong HNCO, $\varv_5$ = 1 and HNCO \\ 463 & 37$_{11,26}$--36$_{11,25}$ & 263~445.456 & 8 & 358 & 141.2 & 74 & Strong HNCO, $\varv_5$ = 1 and HNCO \\ 464 & 20$_{10,11}$--19$_{ 9,10}$$^\star$ & 263~669.118 & 14 & 183 & 22.4 & 108 & Strong CH$_3$OCH$_3$, HNCO, and HC$^{13}$CCN, $\varv_7$ = 1 \\ 466 & 20$_{10,11}$--19$_{ 9,11}$$^\star$ & 263~669.145 & 14 & 183 & 1.4 & 108 & Strong CH$_3$OCH$_3$, HNCO, and HC$^{13}$CCN, $\varv_7$ = 1 \\ 468 & 36$_{ 7,29}$--35$_{ 7,28}$ & 264~087.850 & 11 & 326 & 145.6 & 108 & Blend with H$_2$$^{13}$CS and $U$-line \\ 469 & 37$_{10,28}$--36$_{10,27}$ & 264~094.028 & 9 & 351 & 143.5 & 108 & Blend with H$_2$$^{13}$CS and $U$-line \\ \hline %&&&&&&& \\[-8pt] 470 & 40$_{ 2,38}$--39$_{ 3,37}$ & 266~674.808 & 10 & 352 & 69.7 & 91 & Blend with O$^{13}$CS and C$_2$H$_5$$^{13}$CN \\ 471 & 40$_{ 3,38}$--39$_{ 3,37}$$^\star$ & 266~674.948 & 10 & 352 & 164.4 & 91 & Blend with O$^{13}$CS and C$_2$H$_5$$^{13}$CN \\ 473 & 40$_{ 3,38}$--39$_{ 2,37}$ & 266~675.181 & 10 & 352 & 69.7 & 91 & Blend with O$^{13}$CS and C$_2$H$_5$$^{13}$CN \\ 474 & 15$_{13, 2}$--14$_{12, 3}$$^\star$ & 266~949.479 & 14 & 174 & 27.6 & 91 & Blend with SO$_2$ and $U$-line \\ 476 & 15$_{13, 2}$--14$_{12, 2}$$^\star$ & 266~949.479 & 14 & 174 & 1.6 & 91 & Blend with SO$_2$ and $U$-line \\ 478 & 38$_{ 5,33}$--37$_{ 5,32}$ & 267~143.852 & 100 & 344 & 153.6 & 91 & Strong NH$_2$$^{13}$CHO, CH$_3$CH$_3$CO, and C$_2$H$_5$CN, $\varv_{13}$ = 1/$\varv_{21}$ = 1 \\ \hline \end{tabular} \medskip Notes: $^a$~Numbering of the observed transitions associated with a modeled line stronger than 20~mK. $^b$~Transitions marked with a $^\star$ are double with a frequency difference less than 0.1~MHz. The quantum numbers of the second one are not shown. $^c$~Frequency uncertainty. $^d$~Lower energy level in temperature units~($E_{\rm l}/k_{\rm B}$). $^e$~Calculated rms noise level in $T_{{\rm mb}}$~scale. \end{table}