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           7.358           0.373           4.830
         dry_dep           2.167           2.097           0.070           3.236
         wet_dep           5.564           5.261           0.303           5.451
Lifetime (days)            5.541           5.168           0.373           6.733
Burden (Tg)                0.117           0.104           0.013          11.238
    accumulation           0.073           0.066           0.007           9.603
  primary_carbon           0.044           0.038           0.006          13.930