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Table A.21

Term values (cm−1) of the E1Π(v′ = 0) e- and f-parity levels for six CO isotopologues.

E1Π(v′ = 0)

12C16O 12C17O 12C18O 13C16O 13C17O 13C18O

J e-par. (R&P) f-par. (Q) Λd e-par. (R&P) f-par. (Q) Λd e-par. (R&P) f-par. (Q) Λd e-par. (R&P) f-par. (Q) Λd e-par. (R&P) f-par. (Q) Λd e-par. (R&P) f-par. (Q) Λd
1 92933.878 (30) 92933.833a 0.045 92933.575 (21) 92933.462e 0.113 92933.325 (27) 92933.247e 0.077 92933.530 (23) 92933.480a 0.050 92933.010 (−19) 92932.900a 0.110
2 92941.744 (55) 92941.644a 0.100 92941.207 (19) 92941.075e 0.132 92940.798 (55) 92940.692e 0.106 92941.048 (68) 92940.946a 0.102 92940.821 92940.163 (26) 92939.994a 0.168
3 92953.499 (12) 92953.360a 0.139 92952.673 (40) 92952.493e 0.180 92952.000 (17) 92951.858e 0.142 92952.276 (27) 92952.147a 0.129 92951.820 92950.703 (22) 92950.637a 0.066
4 92969.209 (17) 92968.980a 0.229 92968.042 (8) 92967.718e 0.324 92966.964 (3) 92966.743e 0.221 92967.309 (−13) 92967.080a 0.229 92966.508 92964.762 (*) 92964.828a −0.066
5 92988.865 (−1) 92988.502a 0.363 92987.156 (1) 92986.750e 0.406 92985.655 (−2) 92985.343e 0.311 92986.065 (3) 92985.744a 0.321 92984.470 (*) 92982.520 (*) 92982.563a −0.043
6 93012.438 (−6) 93011.929a 0.508 93010.137 (2) 93009.589e 0.547 93008.091 (0) 93007.656e 0.435 93008.610 (0) 93008.141a 0.469 93006.594 (*) 93004.115 (125) 93003.844a 0.271
7 93039.915 (4) 93039.258a 0.657 93036.912 (19) 93036.235e 0.677 93034.290 (−3) 93033.675e 0.616 93034.867 (−3) 93034.267a 0.600 93031.813 (121) 93029.077 (*) 93028.671a 0.406
8 93071.339 (3) 93070.488a 0.851 93067.553 (1) 93066.689e 0.863 93064.209 (5) 93063.409e 0.800 93064.908 (−7) 93064.068 0.840 93061.093 (−56) 93057.680 (66) 93057.006 0.674
9 93106.692 (3) 93105.634 1.058 93102.005 (1) 93100.951 1.054 93097.850 (0) 93096.859 0.991 93098.680 (4) 93097.699 0.981 93093.972 (−36) 93089.733 (76) 93088.945 0.788
10 93145.946 (−6) 93144.672 1.274 93140.279 (−15) 93138.997 1.282 93135.249 (−9) 93134.063 1.186 93136.223 (−8) 93135.052 1.171 93130.487 (−12) 93125.443 (31) 93124.392 1.051
11 93189.164 (−1) 93187.609 1.555 93182.357 (−10) 93180.817 1.540 93176.368 (−7) 93174.965 1.403 93177.494 (−4) 93176.072 1.422 93170.667 (−4) 93164.667 (16) 93163.355 1.312
12 93236.240 (−19) 93234.382 1.858 93228.270 (−11) 93226.498 1.773 93221.214 (−11) 93219.526 1.688 93222.524 (20) 93220.805 1.719 93214.514 (12) 93207.449 (19) 93205.926 1.523
13 93287.268 (−7) 93285.114 2.154 93278.016 (−3) 93275.929 2.087 93269.803 (−2) 93267.830 1.973 93271.289 (−14) 93269.325 1.964 93261.994 (−4) 93253.743 (−3) 93252.010 1.733
14 93342.198 (5) 93339.694 2.504 93331.572 (−1) 93329.181 2.391 93322.106 (−7) 93319.833 2.272 93323.807 (0) 93321.522 2.285 93313.108 (1) 93303.675 (19) 93301.595 2.079
15 93401.050 (−4) 93398.212 2.839 93388.904 (2) 93386.198 2.707 93378.155 (11) 93375.560 2.595 93380.058 (8) 93377.441 2.617 93367.880 (3) 93357.121 (22) 93354.773 2.348
16 93463.838 (−1) 93460.682 3.156 93450.064 (−2) 93446.804 3.260 93437.905 (1) 93434.991 2.914 93440.065 (−13) 93437.142 2.922 93426.266 (−2) 93423.571 2.695 93414.130 (−1) 93411.338 2.793
17 93530.484 (−5) 93526.855 3.629 93515.058 (−3) 93511.579 3.479 93501.388 (4) 93498.062 3.326 93503.789 (27) 93500.410 3.379 93488.318 (−1) 93485.311 3.007 93474.644 (6) 93471.663 2.980
18 93601.072 (−3) 93597.021 4.050 93583.842 (−2) 93579.962 3.880 93568.577 (−9) 93564.887 3.690 93571.227 (7) 93567.511 3.715 93553.973 (4) 93550.600 3.373 93538.743 (15) 93535.404 3.340
19 93675.514 (15) 93671.007 4.507 93656.435 (−1) 93652.174 4.261 93639.506 (3) 93635.401 4.105 93642.412 (23) 93638.282 4.130 93623.295 (8) 93606.371 (26) 93602.603 3.768
20 93753.899 (18) 93748.983 4.916 93732.822 (−8) 93728.049 4.773 93714.135 (1) 93709.645 4.490 93717.314 (23) 93712.853 4.461 93696.218 (2) 93677.553 (11) 93673.387 4.166
21 93836.178 (−2) 93830.681 5.496 93813.013 (12) 93807.799 5.214 93792.503 (−4) 93787.501 5.002 93795.989 (22) 93790.953 5.036 93772.782 (−16) 93752.286 (27) 93747.784 4.503
22 93922.337 (6) 93916.344 5.993 93896.992 (21) 93891.273 5.719 93874.551 (−8) 93869.101 5.450 93878.345 (28) 93872.742 5.603 93852.983 (−22) 93830.541 (−10) 93825.568 4.973
23 94012.379 (−13) 94005.944 6.435 93984.762 (3) 93978.765 5.997 93960.305 (−11) 93954.467 5.838 93964.425 (−5) 93958.408 6.018 93936.765 93912.329 (−17) 93907.037 5.292
24 94106.331 (−14) 94099.250 7.081 94076.360 (−33) 94069.544 6.816 94049.774 (−3) 94043.304 6.470 94054.231 (8) 94047.766 6.465 94024.193 93997.645 (−21) 93991.966 5.679
25 94204.145 (1) 94196.467 7.678 94171.633 (21) 94164.280 7.353 94142.903 (−5) 94135.934 6.969 94147.735 (1) 94140.896 6.839 94115.203 94086.502 (6) 94080.358 6.144
26 94305.826 (−5) 94297.544 8.282 94270.495 (*) 94239.766 (−1) 94232.325 7.441 94244.954 (6) 94209.849 94178.841 (8) 94172.509 6.332
27 94411.406 (9) 94402.485 8.921 94373.422 (*) 94364.698 8.723 94340.385 (−8) 94332.024 8.361 94345.979 (0) 94308.197 94274.798 (14)
28 94520.866 (2) 94511.144 9.722 94480.069 (*) 94444.550 (0) 94435.010 9.540 94450.537 (5) 94374.230 (−6)
29 94634.154 (8) 94623.932 10.222 94552.491 (−4) 94541.928 10.563 94558.855 (0) 94477.134 (6)
30 94751.320 (−8) 94664.061(−7) 94652.570 11.491 94670.867 (14) 94583.607 (6)
31 94872.072 (*) 94779.347 (3) 94766.874 12.473 94786.606 (−2) 94693.532 (−1)
32 94996.743 (*) 94898.307 (−17) 94905.981 (12) 94806.976 (11)
33 95125.965 95020.894 (33) 95029.057 (−2) 94923.983 (58)
34 95258.538 95147.182 95155.825 (−2) 95044.372 (0)
35 95395.000 95277.045 95286.218 (11) 95168.285 (−8)
36 95420.319 (38) 95295.635 (−60)
37 95558.078 (−2) 95426.758 (91)
38 95699.410 (58) 95561.129 (54)
39 95844.488 95698.962 (93)
40 95993.041 95840.259
41 96144.880 95984.375

Notes. The δP value in parentheses (in units of the least significant digit) corresponds to the wavenumber correction applied to TVP and TVR. There is no value when the term value is derived from a single transition, either R or P. An asterisk indicates when both R- and P-branches are present at high J′, either the potential presence of a perturbing state or that one of the lines shows a larger uncertainty than the other (see also Sect. 2.2.2). Each third column is the Λ -type doubling (cm−1) of the 1 Π state: Λ d = TVR&P–TVQ. (a) Data from Cacciani & Ubachs (2004). (*) Data calculated from the e-parity levels.

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