[%] polar    GISS_B    LSCE_B    ULAQ_B     LOA_B   MPI_HAM UIO_CTM_B UIO_GCM_B     UMI_B   average

         SO4     51.48               53.53     65.85     67.96     54.71     60.84     64.67     59.86
          BC      5.42                6.51      3.58      3.29      4.80      4.53      3.58      4.53