23 August 2018
 
DIATOMICS.ASC contains all the ascii line lists for diatomic molecules
merged into a single file except for TiO which is too large so is
treated separately.  There are 34902438 lines of AlH, AlO, C2, CaH, CaO,
CH, CN, CO, CrH, FeH, H2, MgH, NaH, NH, SiH, SiO, TiH, and VO.