0 0 Mass density (concentration) kg m-3
1 1 Column-integrated mass density (see Note1) kg m-2
2 2 Mass mixing ratio (mass fraction in air) kg kg-1
3 3 Atmosphere emission mass flux kg m-2 s-1
4 4 Atmosphere net production mass flux kg m-2 s-1
5 5 Atmosphere net production and emission mass flux kg m-2 s-1
6 6 Surface dry deposition mass flux kg m-2 s-1
7 7 Surface wet deposition mass flux kg m-2 s-1
8 8 Atmosphere re-emission mass flux kg m-2 s-1
#9-49 9-49 Reserved
50 50 Amount in atmosphere mol
51 51 Concentration in air mol m-3
52 52 Volume mixing ratio (fraction in air) mol mol-1
53 53 Chemical gross production rate of concentration mol m-3 s-1
54 54 Chemical gross destruction rate of concentration mol m-3 s-1
55 55 Surface flux mol m-2 s-1
56 56 Changes of amount in atmosphere (see Note 1) mol s-1
57 57 Total yearly average burden of the atmosphere mol
58 58 Total yearly averaged atmospheric loss (see Note 1) mol s-1
#59-99 59-99 Reserved 
100 100 Surface area density (aerosol) m-1
101 101 Atmosphere optical thickness m
#102-191 102-191 Reserved
#192-254 192-254 Reserved for local use
255 255 Missing 

