POM
                              PD              PI      difference     rel diff(%)
Sources (Tg/yr)           58.695          38.126          20.569          35.044
        emission          58.695          38.126          20.569          35.044
Sinks (Tg/yr)             54.777          36.147          18.630          34.010
         dry_dep          13.846           9.141           4.705          33.981
         wet_dep          40.931          27.007          13.925          34.020
Lifetime (days)            8.949           8.879           0.070           0.787
Burden (Tg)                1.343           0.879           0.464          34.529
    accumulation           0.967           0.635           0.332          34.323
  primary_carbon           0.376           0.244           0.132          35.060