-- number of spiecies
22
-- molecular weight [kg mol-1]
  ! H2O (1) WMO technical regulations
18.0153d-3
  ! CO2 (2)
43.989830d-3
  ! O3 (3)
47.984745d-3
  ! N2O (4)
44.001062E-3
  ! CO (5)
27.994915E-3
  ! CH4 (6)
16.031300E-3
  ! O2 (7)
31.989830E-3
  ! NO (8)
29.997989E-3
  ! SO2 (9)
63.961901E-3
  ! NO2 (10)
45.992904E-3
  ! NH3 (11)
17.026549E-3
  ! HNO3 (12)
62.995644E-3
  ! OH (13)
17.002740E-3
  ! HF (14)
20.006229E-3
  ! HCl (15)
35.976678E-3
  ! HBr (16)
79.926160E-3
  ! HI (17)
127.912297E-3
  ! ClO (18)
50.963768E-3
  ! OCS (19)
59.966986E-3
  ! H2CO (20)
30.010565E-3
  ! HOCl (21)
51.971593E-3
  ! N2 (22)
28.006147E-3