  The rotational sublevels of the key (000) and (010) vibrational states of the
H2S molecule were modeled with an accuracy close to experimental uncertainty
using the generating function and Euler approaches. The predictive ability of
the Hamiltonian parameters derived is tested against variational calculations.
Comparison of transitions wavenumbers obtained from the presently calculated
set of the H2S (000) and (010) energy levels with simulated (000)-(000),
(010)-(010) transitions included in HITRAN 2016 database revealed a large
discrepancy up to 44 cm-1. Large sets of accurate rotational sublevels of the
(000) and (010) states are calculated.
