Region: SPG

                                     st77                  tt18             tt18/st77         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.02493     0.00963     0.02391     0.00780     0.99977     0.20916
                  Rrs_412     0.01827     0.00228     0.01841     0.00255     1.00587     0.02881
                  Rrs_443     0.01325     0.00127     0.01338     0.00147     1.00857     0.02565
          Rrs_490,Rrs_488     0.00709     0.00034     0.00742     0.00045     1.04656     0.03029
          Rrs_510,Rrs_531     0.00347     0.00014     0.00222     0.00008     0.64114     0.02887
          Rrs_555,Rrs_547     0.00140     0.00010     0.00158     0.00007     1.13650     0.09291
          Rrs_670,Rrs_667     0.00017     0.00004     0.00012     0.00002     0.72652     0.19097
          Rrs_670,Rrs_678     0.00017     0.00004     0.00013     0.00002     0.79553     0.17781
          aot_865,aot_869     0.05873     0.01835     0.07461     0.01914     1.34652     0.37065
                 angstrom     0.71332     0.21497     0.56667     0.23281     0.85873     0.40988