SOA
                              PD              PI      difference     rel diff(%)
Sources (Tg/yr)          103.384          92.620          10.763          10.411
    condensation         103.384          92.620          10.763          10.411
Sinks (Tg/yr)            102.859          92.143          10.717          10.419
         dry_dep          13.432          10.663           2.769          20.613
         wet_dep          89.428          81.480           7.948           8.888
Lifetime (days)            5.487           5.428           0.058           1.063
Burden (Tg)                1.546           1.370           0.176          11.371
    accumulation           1.530           1.355           0.174          11.405
          Aitken           0.016           0.015           0.001           8.215