\begin{table}%t1 \caption{\label{lines}Measured transition frequencies$^a$ (MHz) of vibrationally excited CO, transition frequencies$^a$ (MHz) calculated from the final set of spectroscopic parameters, lower state energies~$E_{\rm lo}$ (cm$^{-1}$) and line strengths~$S\mu ^2$ (10$^{-3}$~D$^2$).} \par \small%\centerline { \begin{tabular}{rcccc} \hline \hline & \multicolumn{4}{c}{$\varv = 1$} \\ $J''$ &\multicolumn{1}{c}{measured} &\multicolumn{1}{c}{calculated} &\multicolumn{1}{c}{$E_{\rm lo}$} &\multicolumn{1}{c}{$S\mu ^2$} \\ \hline 0 & -- & 114~221.7523~(13) & 2143.271 & 7.228 \\ 1 & 228~439.074~(25) & 228~439.1008~(24) & 2147.081 & 14.444 \\ 2 & 342~647.636~(20) & 342~647.6421~(33) & 2154.701 & 21.638 \\ 3 & 456~842.977~(10) & 456~842.9726~(37) & 2166.131 & 28.795 \\ 4 & 571~020.677~(12) & 571~020.6895~(37) & 2181.369 & 35.909 \\ 5 & 685~176.392~(5) & 685~176.3902~(34) & 2200.416 & 42.960 \\ 6 & 799~305.677~(10) & 799~305.6731~(32) & 2223.271 & 49.950 \\ 7 & 913~404.136~(5) & 913~404.1370~(40) & 2249.933 & 56.851 \\ 8 & -- & 1~027~467.3817~(59) & 2280.401 & 63.657 \\ 9 & -- & 1~141~491.0083~(84) & 2314.674 & 70.366 \\ 10 & -- & 1~255~470.619~(11) & 2352.750 & 76.954 \\ 11 & -- & 1~369~401.816~(13) & 2394.628 & 83.431 \\ 12 & -- & 1~483~280.205~(15) & 2440.306 & 89.760 \\ 13 & -- & 1~597~101.393~(15) & 2489.783 & 95.941 \\ 14 & -- & 1~710~860.986~(13) & 2543.057 & 101.97 \\ 15 & 1~824~554.595~(10) & 1~824~554.5953~(83) & 2600.125 & 107.85 \\ 16 & 1~938~177.832~(10) & 1~938~177.8318~(92) & 2660.986 & 113.51 \\ 17 & -- & 2~051~726.309~(23) & 2725.636 & 119.04 \\ 18 & -- & 2~165~195.644~(46) & 2794.074 & 124.33 \\ 19 & -- & 2~278~581.453~(77) & 2866.298 & 129.41 \\ \hline & \multicolumn{4}{c}{$\varv = 2$} \\ 0 & -- & 113~172.3761~(31) & 4260.062 & 3.588 \\ 1 & 226~340.341~(20) & 226~340.3489~(56) & 4263.837 & 7.169 \\ 2 & 339~499.521~(20) & 339~499.5151~(72) & 4271.387 & 10.732 \\ 3 & -- & 452~645.4717~(76) & 4282.712 & 14.270 \\ 4 & 565~773.818~(10) & 565~773.8161~(69) & 4297.810 & 17.778 \\ 5 & 678~880.140~(10) & 678~880.1462~(66) & 4316.682 & 21.240 \\ 6 & 791~960.061~(25) & 791~960.0603~(98) & 4339.327 & 24.658 \\ 7 & 905~009.183~(25) & 905~009.158~(16) & 4365.744 & 28.017 \\ 8 & -- & 1~018~023.038~(25) & 4395.932 & 31.304 \\ 9 & -- & 1~130~997.302~(34) & 4429.890 & 34.525 \\ 10 & -- & 1~243~927.553~(42) & 4467.616 & 37.665 \\ 11 & -- & 1~356~809.392~(48) & 4509.109 & 40.719 \\ 12 & -- & 1~469~638.425~(50) & 4554.367 & 43.677 \\ 13 & -- & 1~582~410.258~(45) & 4603.389 & 46.526 \\ 14 & -- & 1~695~120.497~(32) & 4656.172 & 49.273 \\ 15 & 1~807~764.748~(15) & 1~807~764.752~(18) & 4712.716 & 51.907 \\ 16 & 1~920~338.703~(80) & 1~920~338.633~(48) & 4773.016 & 54.408 \\ 17 & -- & 2~032~837.75~(11) & 4837.072 & 56.797 \\ 18 & -- & 2~145~257.73~(21) & 4904.880 & 59.032 \\ 19 & -- & 2~257~594.17~(33) & 4976.438 & 61.146 \\ \hline & \multicolumn{4}{c}{$\varv = 3$} \\ 0 & -- & 112~123.087~(12) & 6350.439 & 1.207 \\ 1 & -- & 224~241.770~(22) & 6354.179 & 2.410 \\ 2 & -- & 336~351.644~(30) & 6361.659 & 3.603 \\ 3 & -- & 448~448.307~(35) & 6372.879 & 4.781 \\ 4 & -- & 560~527.354~(37) & 6387.837 & 5.939 \\ 5 & 672~584.390~(40) & 672~584.384~(37) & 6406.534 & 7.075 \\ 6 & -- & 784~614.995~(40) & 6428.969 & 8.182 \\ 7 & 896~614.750~(100)& 896~614.785~(49) & 6455.141 & 9.255 \\ 8 & -- & 1~008~579.357~(65) & 6485.049 & 10.290 \\ 9 & -- & 1~120~504.311~(85) & 6518.692 & 11.284 \\ 10 & -- & 1~232~385.25~(11) & 6556.068 & 12.232 \\ 11 & -- & 1~344~217.78~(12) & 6597.176 & 13.132 \\ 12 & -- & 1~455~997.51~(13) & 6642.014 & 13.976 \\ 13 & -- & 1~567~720.05~(12) & 6690.581 & 14.762 \\ 14 & -- & 1~679~381.012~(94) & 6742.874 & 15.488 \\ 15 & 1~790~976.008~(50) & 1~790~976.004~(49) & 6798.892 & 16.151 \\ 16 & 1~902~500.636~(100)& 1~902~500.647~(96) & 6858.633 & 16.747 \\ 17 & -- & 2~013~950.56~(25) & 6922.094 & 17.275 \\ 18 & -- & 2~125~321.36~(47) & 6989.272 & 17.728 \\ 19 & -- & 2~236~608.68~(78) & 7060.165 & 18.110 \\ \hline \end{tabular}} \smallskip $^a$ Numbers in parentheses are one standard deviation in units of the least significant figures. \end{table}