With respect to the first entry from Dec. 2001, the data set was reevaluated. The majority of the lines (in the millimeter wavelength region) were again taken from
(1) S. Yamamoto, S. Saito, K. Kawaguchi, N. Kaifu, H. Suzuki, and M. Ohishi, 1987, Astrophys. J. 317, L119.
The uncertainties of 20 kHz were assigned on the basis of the partial rms error and reported standard errors in (1). The J" = 2 to 4 transition frequencies originate from
(2) N. Sakai, S. Takano, T. Sakai, S. Shiba, Y. Sumiyoshi, Y. Endo, and S. Yamamoto, 2013, J. Phys. Chem. A 117, 9831.
The J" = 0 and 1 transition frequencies were taken from
(3) Y. Oshima and Y. Endo, 1992, J. Mol. Spectrosc. 153, 627.
The uncertainties in (3) were estimated based on the residuals.
The value for H was estimated from the main isotopolog. Predictions beyond about 500 GHz should be viewed with caution.
The dipole moment is assumed to be the same as for the main isotopolog, see e068503.cat.