SOA
                     b.e13.B1850     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)          114.568         125.388         -10.820          -9.444
    condensation         114.568         125.388         -10.820          -9.444
Sinks (Tg/yr)            113.617         124.411         -10.795          -9.501
         dry_dep          20.589          21.808          -1.219          -5.920
         wet_dep          93.028         102.604          -9.576         -10.294
Lifetime (days)            3.948           4.060          -0.112          -2.828
Burden (Tg)                1.229           1.384          -0.155         -12.598
    accumulation           1.222           1.364          -0.143         -11.691
          Aitken           0.008           0.020          -0.012        -152.218