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

         SO4     51.48     59.60     57.90     65.85     68.63     56.28     60.73     65.06     60.69
          BC      5.42      4.04      5.90      3.58      3.22      4.45      4.52      3.54      4.33