SOA
                              PD              PI      difference     rel diff(%)
Sources (Tg/yr)           88.407          77.975          10.432          11.800
    condensation          88.407          77.975          10.432          11.800
Sinks (Tg/yr)             87.895          77.791          10.103          11.495
         dry_dep          10.013           7.303           2.709          27.057
         wet_dep          77.882          70.488           7.394           9.494
Lifetime (days)            4.672           4.654           0.018           0.394
Burden (Tg)                1.125           0.992           0.133          11.843
    accumulation           1.108           0.976           0.132          11.895
          Aitken           0.017           0.015           0.001           8.613