BC
                     f.e13.F2000     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)            7.794           7.794           0.000           0.000
        emission           7.794           7.794           0.000           0.000
Sinks (Tg/yr)              7.731           7.732          -0.001          -0.017
         dry_dep           2.167           2.153           0.014           0.662
         wet_dep           5.564           5.580          -0.016          -0.281
Lifetime (days)            5.541           5.534           0.007           0.126
Burden (Tg)                0.117           0.117           0.000           0.109
    accumulation           0.073           0.072           0.001           1.032
  primary_carbon           0.044           0.045          -0.001          -1.404