BC
                              PD              PI      difference     rel diff(%)
Sources (Tg/yr)            8.267           3.385           4.882          59.055
        emission           8.267           3.385           4.882          59.055
Sinks (Tg/yr)              7.917           3.204           4.713          59.529
         dry_dep           1.905           0.845           1.060          55.649
         wet_dep           6.012           2.359           3.653          60.759
Lifetime (days)            7.837           8.526          -0.689          -8.789
Burden (Tg)                0.170           0.075           0.095          55.972
    accumulation           0.134           0.056           0.077          57.850
  primary_carbon           0.036           0.019           0.018          49.092