\begin{table}%t10 \caption{\label{t:lines-gauche-PrCN}Transitions of \textit{gauche}-\textit{n}-propyl cyanide, employed in the present fits, their frequencies (MHz), uncertainties Unc. (kHz), and residuals~O$-$C (kHz) between frequencies measured in the laboratory and those calculated from the final spectroscopic parameters. Unresolved asymmetry splitting (two transitions having the same~$K_a$ and the same transition frequency) has been treated as intensity-weighted average of the two lines.} %\centering \small \begin{tabular}{rclr@{}lrr} \hline \hline $J'$, $K_a'$, $K_c'$ & $-$ & $J''$, $K_a''$, $K_c''$ & \multicolumn{2}{c}{Frequency} & Unc. & O$-$C\\ \hline 2, 0, 2 & $-$ & 1, 0, 1 & 11912&.654 & 10 & $-$18 \\ 2, 1, 2 & $-$ & 1, 1, 1 & 11384&.045 & 10 & $-$0 \\ 2, 1, 1 & $-$ & 1, 1, 0 & 12508&.374 & 10 & $-$10 \\ 3, 0, 3 & $-$ & 2, 0, 2 & 17785&.949 & 10 & 6 \\ 3, 1, 3 & $-$ & 2, 1, 2 & 17055&.610 & 5 & 1 \\ 2, 1, 2 & $-$ & 1, 0, 1 & 18176&.781 & 5 & 1 \\ 4, 1, 3 & $-$ & 4, 0, 4 & 10286&.601 & 5 & 0 \\ 5, 1, 4 & $-$ & 5, 0, 5 & 12167&.868 & 5 & $-$3 \\ 6, 1, 5 & $-$ & 6, 0, 6 & 14609&.404 & 5 & 1 \\ 7, 1, 6 & $-$ & 7, 0, 7 & 17634&.822 & 5 & 1 \\ 2, 2, 1 & $-$ & 2, 1, 2 & 22064&.261 & 5 & 0 \\ 24, 3, 21 & $-$ & 25, 2, 24 & 5073&.952 & 5 & 0 \\ 10, 3, 7 & $-$ & 9, 4, 6 & 12670&.827 & 5 & $-$2 \\ 11, 3, 9 & $-$ & 10, 4, 6 & 16546&.819 & 5 & $-$3 \\ 28, 3, 26 & $-$ & 27, 4, 23 & 19891&.929 & 5 & 1 \\ 36, 4, 32 & $-$ & 37, 3, 35 & 19547&.899 & 5 & 1 \\ 13, 4, 10 & $-$ & 12, 5, 7 & 15362&.409 & 5 & 0 \\ 38, 4, 35 & $-$ & 37, 5, 32 & 9991&.617 & 5 & 0 \\ 39, 4, 36 & $-$ & 38, 5, 33 & 5311&.217 & 5 & 1 \\ 15, 5, 10 & $-$ & 14, 6, 9 & 13597&.769 & 5 & 1 \\ 12, 7, 6 & $-$ & 13, 6, 7 & 13549&.701 & 5 & $-$1 \\ 12, 7, 5 & $-$ & 13, 6, 8 & 13551&.095 & 5 & 5 \\ 13, 7, 7 & $-$ & 14, 6, 8 & 7398&.401 & 5 & $-$2 \\ 13, 7, 6 & $-$ & 14, 6, 9 & 7401&.855 & 5 & 4 \\ 15, 8, 8 & $-$ & 16, 7, 9 & 9498&.238 & 5 & $-$4 \\ 15, 8, 7 & $-$ & 16, 7, 10 & 9498&.794 & 5 & $-$5 \\ 19, 7, 12 & $-$ & 18, 8, 11 & 9123&.186 & 5 & $-$1 \\ 19, 7, 13 & $-$ & 18, 8, 10 & 9116&.781 & 5 & $-$1 \\ 20, 7, 14 & $-$ & 19, 8, 11 & 15398&.422 & 5 & 0 \\ 22, 8, 14 & $-$ & 21, 9, 13 & 13221&.090 & 5 & $-$0 \\ 22, 8, 15 & $-$ & 21, 9, 12 & 13218&.792 & 5 & $-$2 \\ 23, 8, 15 & $-$ & 22, 9, 14 & 19511&.211 & 5 & 2 \\ 23, 8, 16 & $-$ & 22, 9, 13 & 19506&.528 & 5 & 0 \\ 19, 10, 10 & $-$ & 20, 9, 11 & 13681&.725 & 5 & $-$1 \\ 19, 10, 9 & $-$ & 20, 9, 12 & 13681&.725 & 5 & $-$1 \\ 25, 9, 17 & $-$ & 24, 10, 14 & 17310&.401 & 5 & $-$6 \\ 25, 9, 16 & $-$ & 24, 10, 15 & 17311&.214 & 5 & 2 \\ 26, 9, 18 & $-$ & 25, 10, 15 & 23599&.302 & 5 & 2 \\ 26, 9, 17 & $-$ & 25, 10, 16 & 23600&.945 & 5 & 11 \\ 28, 10, 19 & $-$ & 27, 11, 16 & 21388&.390 & 5 & $-$9 \\ 28, 10, 18 & $-$ & 27, 11, 17 & 21388&.670 & 5 & $-$6 \\ 26, 13, 14 & $-$ & 27, 12, 15 & 13813&.369 & 5 & $-$3 \\ 26, 13, 13 & $-$ & 27, 12, 16 & 13813&.369 & 5 & $-$3 \\ 22, 4, 18 & $-$ & 22, 4, 19 & 25543&.715 & 5 & $-$1 \\ 25, 5, 20 & $-$ & 25, 5, 21 & 16254&.957 & 5 & 2 \\ 26, 5, 21 & $-$ & 26, 5, 22 & 21090&.090 & 5 & $-$1 \\ 30, 6, 24 & $-$ & 30, 6, 25 & 16246&.388 & 5 & 1 \\ 31, 6, 25 & $-$ & 31, 6, 26 & 21145&.902 & 5 & 1 \\ 34, 7, 27 & $-$ & 34, 7, 28 & 11727&.780 & 5 & $-$2 \\ 36, 7, 29 & $-$ & 36, 7, 30 & 20572&.880 & 5 & $-$2 \\ 37, 7, 30 & $-$ & 37, 7, 31 & 26237&.933 & 5 & 4 \\ 39, 8, 31 & $-$ & 39, 8, 32 & 11013&.037 & 5 & $-$2 \\ 25, 5, 21 & $-$ & 24, 4, 20 & 182990&.23 & 50 & 19 \\ 26, 6, 21 & $-$ & 25, 6, 20 & 157628&.25 & 50 & 16 \\ 26, 7, 19 & $-$ & 25, 7, 18 & 157477&.90 & 50 & 8 \\ 26, 10, 17 & $-$ & 25, 10, 16 & 156296&.53 & 50 & $-$59 \\ 26, 10, 16 & $-$ & 25, 10, 15 & 156296&.53 & 50 & $-$59 \\ 26, 11, 16 & $-$ & 25, 11, 15 & 156141&.79 & 50 & 65 \\ 26, 11, 15 & $-$ & 25, 11, 14 & 156141&.79 & 50 & 65 \\ 26, 12, 15 & $-$ & 25, 12, 14 & 156032&.20 & 50 & $-$22 \\ \hline 26, 12, 14 & $-$ & 25, 12, 13 & 156032&.20 & 50 & $-$22 \\ 26, 13, 14 & $-$ & 25, 13, 13 & 155954&.49 & 50 & $-$56 \\ 26, 13, 13 & $-$ & 25, 13, 12 & 155954&.49 & 50 & $-$56 \\ 26, 14, 13 & $-$ & 25, 14, 12 & 155900&.13 & 50 & $-$0 \\ 26, 14, 12 & $-$ & 25, 14, 11 & 155900&.13 & 50 & $-$0 \\ 26, 15, 12 & $-$ & 25, 15, 11 & 155863&.29 & 50 & $-$10 \\ 26, 15, 11 & $-$ & 25, 15, 10 & 155863&.29 & 50 & $-$10 \\ 26, 17, 10 & $-$ & 25, 17, 9 & 155827&.91 & 50 & $-$33 \\ 26, 17, 9 & $-$ & 25, 17, 8 & 155827&.91 & 50 & $-$33 \\ 26, 18, 9 & $-$ & 25, 18, 8 & 155824&.64 & 50 & $-$20 \\ 26, 18, 8 & $-$ & 25, 18, 7 & 155824&.64 & 50 & $-$20 \\ 26, 19, 8 & $-$ & 25, 19, 7 & 155828&.81 & 50 & $-$17 \\ 26, 19, 7 & $-$ & 25, 19, 6 & 155828&.81 & 50 & $-$17 \\ 28, 1, 27 & $-$ & 27, 1, 26 & 157495&.25 & 50 & $-$33 \\ 28, 2, 27 & $-$ & 27, 1, 26 & 157503&.23 & 50 & $-$51 \\ 28, 1, 27 & $-$ & 27, 2, 26 & 157482&.64 & 50 & 46 \\ 28, 2, 27 & $-$ & 27, 2, 26 & 157490&.60 & 50 & 8 \\ 29, 5, 25 & $-$ & 28, 4, 24 & 189805&.28 & 50 & 48 \\ 30, 4, 27 & $-$ & 29, 3, 26 & 178167&.69 & 50 & 31 \\ 30, 4, 26 & $-$ & 29, 4, 25 & 182703&.13 & 50 & $-$23 \\ 30, 5, 26 & $-$ & 29, 4, 25 & 192210&.43 & 50 & 32 \\ 30, 7, 23 & $-$ & 29, 7, 22 & 182961&.27 & 50 & $-$29 \\ 31, 2, 29 & $-$ & 30, 2, 28 & 177803&.90 & 50 & $-$13 \\ 31, 3, 29 & $-$ & 30, 2, 28 & 177857&.94 & 50 & $-$1 \\ 31, 2, 29 & $-$ & 30, 3, 28 & 177721&.22 & 50 & 6 \\ 31, 3, 29 & $-$ & 30, 3, 28 & 177775&.23 & 50 & $-$12 \\ 31, 3, 28 & $-$ & 30, 3, 27 & 182248&.22 & 50 & $-$22 \\ 31, 4, 28 & $-$ & 30, 3, 27 & 183077&.55 & 50 & 26 \\ 31, 3, 28 & $-$ & 30, 4, 27 & 181050&.65 & 50 & 36 \\ 31, 4, 27 & $-$ & 30, 5, 26 & 178318&.43 & 50 & 156 \\ 31, 5, 26 & $-$ & 30, 5, 25 & 192803&.61 & 50 & 6 \\ 31, 7, 25 & $-$ & 30, 7, 24 & 188156&.51 & 50 & $-$20 \\ 31, 7, 24 & $-$ & 30, 7, 23 & 189515&.12 & 50 & $-$74 \\ 31, 8, 23 & $-$ & 30, 8, 22 & 187858&.13 & 50 & 9 \\ 32, 2, 30 & $-$ & 31, 2, 29 & 183183&.36 & 50 & 18 \\ 32, 3, 30 & $-$ & 31, 2, 29 & 183218&.50 & 50 & 28 \\ 32, 2, 30 & $-$ & 31, 3, 29 & 183129&.35 & 50 & 37 \\ 32, 3, 30 & $-$ & 31, 3, 29 & 183164&.45 & 50 & 6 \\ 32, 4, 29 & $-$ & 31, 3, 28 & 188119&.54 & 50 & $-$5 \\ 32, 4, 28 & $-$ & 31, 4, 27 & 192927&.96 & 50 & $-$13 \\ 32, 4, 28 & $-$ & 31, 5, 27 & 185714&.09 & 50 & 6 \\ 32, 10, 23 & $-$ & 31, 10, 22 & 192852&.63 & 50 & $-$4 \\ 32, 10, 22 & $-$ & 31, 10, 21 & 192854&.42 & 50 & $-$4 \\ 32, 12, 21 & $-$ & 31, 12, 20 & 192320&.23 & 50 & 5 \\ 32, 12, 20 & $-$ & 31, 12, 19 & 192320&.23 & 50 & 5 \\ 32, 13, 20 & $-$ & 31, 13, 19 & 192158&.76 & 50 & $-$19 \\ 32, 13, 19 & $-$ & 31, 13, 18 & 192158&.76 & 50 & $-$19 \\ 32, 14, 19 & $-$ & 31, 14, 18 & 192040&.62 & 50 & 14 \\ 32, 14, 18 & $-$ & 31, 14, 17 & 192040&.62 & 50 & 14 \\ 33, 2, 31 & $-$ & 32, 2, 30 & 188564&.34 & 50 & $-$33 \\ 33, 3, 31 & $-$ & 32, 2, 30 & 188587&.13 & 50 & 13 \\ 33, 2, 31 & $-$ & 32, 3, 30 & 188529&.24 & 50 & $-$2 \\ 33, 3, 31 & $-$ & 32, 3, 30 & 188551&.94 & 50 & $-$47 \\ 33, 3, 30 & $-$ & 32, 3, 29 & 192871&.17 & 50 & $-$3 \\ 33, 4, 30 & $-$ & 32, 3, 29 & 193259&.00 & 50 & 18 \\ 33, 3, 30 & $-$ & 32, 4, 29 & 192301&.88 & 50 & $-$16 \\ 33, 4, 30 & $-$ & 32, 4, 29 & 192689&.70 & 50 & $-$5 \\ 33, 4, 29 & $-$ & 32, 5, 28 & 192663&.51 & 50 & 12 \\ 34, 2, 32 & $-$ & 33, 2, 31 & 193946&.21 & 50 & $-$59 \\ 34, 3, 32 & $-$ & 33, 2, 31 & 193960&.95 & 50 & 14 \\ 34, 2, 32 & $-$ & 33, 3, 31 & 193923&.55 & 50 & 26 \\ 34, 3, 32 & $-$ & 33, 3, 31 & 193938&.16 & 50 & $-$32 \\ 34, 6, 28 & $-$ & 33, 6, 27 & 212120&.06 & 50 & 3 \\ 35, 6, 29 & $-$ & 34, 6, 28 & 218287&.17 & 50 & $-$26 \\ 35, 7, 29 & $-$ & 34, 7, 28 & 212483&.75 & 50 & 16 \\ 35, 8, 28 & $-$ & 34, 8, 27 & 212458&.29 & 50 & $-$13 \\ \hline 35, 9, 27 & $-$ & 34, 9, 26 & 211828&.06 & 50 & 142 \\ 35, 9, 26 & $-$ & 34, 9, 25 & 211938&.01 & 50 & 7 \\ 36, 4, 32 & $-$ & 35, 5, 31 & 211527&.01 & 50 & 14 \\ 36, 10, 27 & $-$ & 35, 10, 26 & 217402&.38 & 50 & $-$15 \\ 36, 10, 26 & $-$ & 35, 10, 25 & 217418&.12 & 50 & $-$2 \\ 36, 11, 26 & $-$ & 35, 11, 25 & 216940&.59 & 50 & $-$30 \\ 36, 11, 25 & $-$ & 35, 11, 24 & 216941&.74 & 50 & 33 \\ 36, 12, 25 & $-$ & 35, 12, 24 & 216609&.17 & 50 & $-$33 \\ 36, 12, 24 & $-$ & 35, 12, 23 & 216609&.17 & 50 & $-$33 \\ 36, 13, 24 & $-$ & 35, 13, 23 & 216367&.23 & 50 & $-$1 \\ 36, 13, 23 & $-$ & 35, 13, 22 & 216367&.23 & 50 & $-$1 \\ 36, 14, 23 & $-$ & 35, 14, 22 & 216188&.17 & 50 & 23 \\ 36, 14, 22 & $-$ & 35, 14, 21 & 216188&.17 & 50 & 23 \\ 36, 16, 21 & $-$ & 35, 16, 20 & 215956&.57 & 50 & $-$26 \\ 36, 16, 20 & $-$ & 35, 16, 19 & 215956&.57 & 50 & $-$26 \\ 36, 17, 20 & $-$ & 35, 17, 19 & 215885&.18 & 50 & $-$12 \\ 36, 17, 19 & $-$ & 35, 17, 18 & 215885&.18 & 50 & $-$12 \\ 36, 18, 19 & $-$ & 35, 18, 18 & 215835&.30 & 50 & 9 \\ 36, 18, 18 & $-$ & 35, 18, 17 & 215835&.30 & 50 & 9 \\ 36, 20, 17 & $-$ & 35, 20, 16 & 215784&.95 & 50 & 23 \\ 36, 20, 16 & $-$ & 35, 20, 15 & 215784&.95 & 50 & 23 \\ 36, 21, 16 & $-$ & 35, 21, 15 & 215779&.22 & 50 & 45 \\ 36, 21, 15 & $-$ & 35, 21, 14 & 215779&.22 & 50 & 45 \\ 36, 22, 15 & $-$ & 35, 22, 14 & 215783&.85 & 50 & 5 \\ 36, 22, 14 & $-$ & 35, 22, 13 & 215783&.85 & 50 & 5 \\ 36, 23, 14 & $-$ & 35, 23, 13 & 215797&.53 & 50 & $-$19 \\ 36, 23, 13 & $-$ & 35, 23, 12 & 215797&.53 & 50 & $-$19 \\ 36, 24, 13 & $-$ & 35, 24, 12 & 215819&.22 & 50 & 36 \\ 36, 24, 12 & $-$ & 35, 24, 11 & 215819&.22 & 50 & 36 \\ 36, 25, 12 & $-$ & 35, 25, 11 & 215847&.81 & 50 & $-$52 \\ 36, 25, 11 & $-$ & 35, 25, 10 & 215847&.81 & 50 & $-$52 \\ 36, 26, 11 & $-$ & 35, 26, 10 & 215882&.85 & 50 & $-$12 \\ 36, 26, 10 & $-$ & 35, 26, 9 & 215882&.85 & 50 & $-$12 \\ 36, 27, 10 & $-$ & 35, 27, 9 & 215923&.60 & 50 & 10 \\ 36, 27, 9 & $-$ & 35, 27, 8 & 215923&.60 & 50 & 10 \\ 36, 28, 9 & $-$ & 35, 28, 8 & 215969&.54 & 50 & $-$15 \\ 36, 28, 8 & $-$ & 35, 28, 7 & 215969&.54 & 50 & $-$15 \\ 36, 32, 5 & $-$ & 35, 32, 4 & 216198&.45 & 50 & 4 \\ 36, 32, 4 & $-$ & 35, 32, 3 & 216198&.45 & 50 & 4 \\ 37, 3, 34 & $-$ & 36, 3, 33 & 214265&.30 & 50 & $-$8 \\ 37, 3, 34 & $-$ & 36, 4, 33 & 214147&.29 & 50 & $-$26 \\ 37, 4, 34 & $-$ & 36, 4, 33 & 214225&.81 & 50 & $-$13 \\ 38, 1, 37 & $-$ & 37, 2, 36 & 211401&.39 & 50 & 59 \\ 38, 3, 36 & $-$ & 37, 2, 35 & 215476&.23 & 50 & 36 \\ 38, 2, 36 & $-$ & 37, 3, 35 & 215469&.85 & 50 & $-$35 \\ 38, 3, 35 & $-$ & 37, 3, 34 & 219628&.21 & 50 & 19 \\ 38, 3, 35 & $-$ & 37, 4, 34 & 219549&.67 & 50 & $-$13 \\ 38, 4, 35 & $-$ & 37, 4, 34 & 219601&.64 & 50 & $-$40 \\ 39, 0, 39 & $-$ & 38, 1, 38 & 212743&.02 & 50 & 6 \\ 39, 2, 37 & $-$ & 38, 2, 36 & 220854&.26 & 50 & $-$8 \\ 39, 3, 37 & $-$ & 38, 2, 36 & 220855&.81 & 50 & $-$18 \\ 39, 2, 37 & $-$ & 38, 3, 36 & 220851&.79 & 50 & $-$24 \\ 39, 3, 37 & $-$ & 38, 3, 36 & 220853&.34 & 50 & $-$33 \\ 40, 0, 40 & $-$ & 39, 1, 39 & 218129&.30 & 50 & 18 \\ 47, 14, 34 & $-$ & 46, 14, 33 & 282874&.18 & 50 & 42 \\ 47, 17, 31 & $-$ & 46, 17, 30 & 282070&.21 & 50 & 4 \\ 47, 17, 30 & $-$ & 46, 17, 29 & 282070&.21 & 50 & 4 \\ 47, 19, 29 & $-$ & 46, 19, 28 & 281801&.94 & 50 & 20 \\ 47, 19, 28 & $-$ & 46, 19, 27 & 281801&.94 & 50 & 20 \\ 47, 20, 28 & $-$ & 46, 20, 27 & 281716&.83 & 50 & 33 \\ 47, 20, 27 & $-$ & 46, 20, 26 & 281716&.83 & 50 & 33 \\ 47, 21, 27 & $-$ & 46, 21, 26 & 281656&.67 & 50 & 10 \\ 47, 21, 26 & $-$ & 46, 21, 25 & 281656&.67 & 50 & 10 \\ 47, 22, 26 & $-$ & 46, 22, 25 & 281617&.41 & 50 & $-$44 \\ \hline 47, 22, 25 & $-$ & 46, 22, 24 & 281617&.41 & 50 & $-$44 \\ 47, 23, 25 & $-$ & 46, 23, 24 & 281596&.02 & 50 & $-$16 \\ 47, 23, 24 & $-$ & 46, 23, 23 & 281596&.02 & 50 & $-$16 \\ 47, 24, 24 & $-$ & 46, 24, 23 & 281589&.94 & 50 & 8 \\ 47, 24, 23 & $-$ & 46, 24, 22 & 281589&.94 & 50 & 8 \\ 47, 25, 23 & $-$ & 46, 25, 22 & 281597&.15 & 50 & $-$18 \\ 47, 25, 22 & $-$ & 46, 25, 21 & 281597&.15 & 50 & $-$18 \\ 47, 26, 22 & $-$ & 46, 26, 21 & 281616&.14 & 50 & $-$10 \\ 47, 26, 21 & $-$ & 46, 26, 20 & 281616&.14 & 50 & $-$10 \\ 47, 27, 21 & $-$ & 46, 27, 20 & 281645&.57 & 50 & $-$9 \\ 47, 27, 20 & $-$ & 46, 27, 19 & 281645&.57 & 50 & $-$9 \\ 47, 28, 20 & $-$ & 46, 28, 19 & 281684&.43 & 50 & 48 \\ 47, 28, 19 & $-$ & 46, 28, 18 & 281684&.43 & 50 & 48 \\ 47, 29, 19 & $-$ & 46, 29, 18 & 281731&.64 & 50 & $-$30 \\ 47, 29, 18 & $-$ & 46, 29, 17 & 281731&.64 & 50 & $-$30 \\ 47, 30, 18 & $-$ & 46, 30, 17 & 281786&.66 & 50 & $-$36 \\ 47, 30, 17 & $-$ & 46, 30, 16 & 281786&.66 & 50 & $-$36 \\ 47, 31, 17 & $-$ & 46, 31, 16 & 281848&.86 & 50 & 31 \\ 47, 31, 16 & $-$ & 46, 31, 15 & 281848&.86 & 50 & 31 \\ 47, 33, 15 & $-$ & 46, 33, 14 & 281992&.38 & 50 & 34 \\ 47, 33, 14 & $-$ & 46, 33, 13 & 281992&.38 & 50 & 34 \\ 47, 34, 14 & $-$ & 46, 34, 13 & 282072&.85 & 50 & $-$22 \\ 47, 34, 13 & $-$ & 46, 34, 12 & 282072&.85 & 50 & $-$22 \\ 48, 5, 43 & $-$ & 47, 5, 42 & 281724&.06 & 50 & 0 \\ 48, 6, 43 & $-$ & 47, 6, 42 & 281635&.78 & 50 & $-$33 \\ \hline \end{tabular} \end{table}