SOA
                     b.e13.B1850     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)           78.013          88.443         -10.429         -13.368
    condensation          78.013          88.443         -10.429         -13.368
Sinks (Tg/yr)             77.807          88.290         -10.483         -13.473
         dry_dep          11.424          12.790          -1.366         -11.961
         wet_dep          66.384          75.500          -9.117         -13.733
Lifetime (days)            3.317           3.304           0.013           0.399
Burden (Tg)                0.707           0.799          -0.092         -13.020
    accumulation           0.699           0.785          -0.086         -12.273
          Aitken           0.008           0.014          -0.006         -76.560