BC
                     b.e13.B1850     f.e13.F2000      difference     rel diff(%)
Sources (Tg/yr)            3.085           7.766          -4.681        -151.740
        emission           3.085           7.766          -4.681        -151.740
Sinks (Tg/yr)              3.078           7.744          -4.666        -151.605
         dry_dep           0.932           2.016          -1.084        -116.388
         wet_dep           2.146           5.728          -3.582        -166.894
Lifetime (days)            6.927           5.384           1.543          22.279
Burden (Tg)                0.058           0.114          -0.056         -95.550
    accumulation           0.032           0.079          -0.047        -146.458
  primary_carbon           0.026           0.035          -0.009         -33.852