Region: SPG

                                   sr2007                  st83           st83/sr2007         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.03324     0.01215     0.02923     0.01221     0.86840     0.08024
                  Rrs_412     0.01901     0.00237     0.01824     0.00223     0.96025     0.00890
                  Rrs_443     0.01345     0.00131     0.01331     0.00126     0.98956     0.00836
                  Rrs_490     0.00732     0.00034     0.00720     0.00033     0.98279     0.01073
                  Rrs_510     0.00363     0.00013     0.00357     0.00015     0.98533     0.01930
                  Rrs_555     0.00149     0.00010     0.00148     0.00012     0.99258     0.03565
                  Rrs_670     0.00027     0.00004     0.00020     0.00005     0.73459     0.07530
          tau_865,aot_865     0.10473     0.02858     0.06655     0.02051     0.63088     0.05616
           eps_78,epsilon     1.02681     0.02062     1.03067     0.02041     1.00380     0.00759
    angstrom_510,angstrom     0.26656     0.12405     0.65146     0.20974     2.69768     0.95967