As for now, the data are given in the RADEX format (https://personal.sron.nl/~vdtak/radex/index.shtml#moldata) as employed in the LAMDA database (https://home.strw.leidenuniv.nl/~moldata/):
| Lines | Description |
|---|---|
| 1 - 2 | Molecule name |
| 3 - 4 | Molecular weight (a.m.u) |
| 5 - 6 | Number of energy levels (NLEV) |
| 7 - (7+NLEV) | Level number, level energy (cm-1), statistical weight. These numbers are followed by the full set of quantum numbers. The levels are listed in order of increasing energy. |
| (8+NLEV) - (9+NLEV) | Number of radiative transitions (NLIN) |
| (10+NLEV - 10+NLEV+NLIN) | Transition number, upper level, lower level, spontaneous decay rate (s-1). These numbers are followed by the line frequency and upper state energy. |
| (11+NLEV+NLIN) - (12+NLEV+NLIN) | Number of collision partners |
| (13+NLEV+NLIN) - (14+NLEV+NLIN) | Collision partner ID and reference. Identifications are: para-H2 = 2, ortho-H2 = 3, electrons = 4, H = 5, He = 6, H+ = 7, para-H2O = 2, ortho-H2O = 3, CO = 5 |
| (15+NLEV+NLIN) - (16+NLEV+NLIN) | Number of transitions for which collisional data exist (NCOL) |
| (17+NLEV+NLIN) - (18+NLEV+NLIN) | Number of temperatures for which collisional data exits |
| (19+NLEV+NLIN) - (20+NLEV+NLIN) | Values of temperatures for which collisional data exist |
| (21+NLEV+NLIN) - (21+NLEV+NLIN+NCOL) | Transition number, upper level, lower level, rate coefficient (cm3s-1) at each temperature |