The lines were taken from (1) Y. Kasai, K. Obi, Y. Ohshima, Y. Endo, and K. Kawaguchi,
J. Chem. Phys. 103 (1995) 90 - 95 (FT microwave); and
(2) K. Tanaka, M. Shirasaka, and T. Tanaka, J. Chem. Phys. 106 (1997) 6820 - 6824 (millimeter wave).