BC
                              PD              PI      difference     rel diff(%)
Sources (Tg/yr)            7.795           2.901           4.894          62.780
        emission           7.795           2.901           4.894          62.780
Sinks (Tg/yr)              7.647           2.907           4.740          61.983
         dry_dep           2.047           0.864           1.183          57.777
         wet_dep           5.600           2.043           3.557          63.521
Lifetime (days)            7.809           9.439          -1.630         -20.874
Burden (Tg)                0.164           0.075           0.088          54.047
    accumulation           0.111           0.042           0.069          62.534
  primary_carbon           0.053           0.034           0.019          36.161