Region: SPG

                                     ot07                  ot12             ot12/ot07         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.02493     0.00910     0.03305     0.01451     1.30004     0.15605
                  Rrs_412     0.01969     0.00291     0.02165     0.00285     1.10293     0.02340
                  Rrs_443     0.01475     0.00174     0.01619     0.00168     1.09940     0.02032
                  Rrs_490     0.00736     0.00057     0.00857     0.00047     1.16659     0.03660
                  Rrs_516     0.00307     0.00017     0.00351     0.00017     1.14678     0.05250
                  Rrs_565     0.00133     0.00007     0.00160     0.00010     1.20440     0.08280
                  Rrs_667     0.00010     0.00003     0.00024     0.00005     2.33573     0.45803
                  aot_862     0.07458     0.02090     0.06641     0.01637     0.90243     0.06993
                 angstrom     0.02073     0.01981     0.68640     0.23308    64.57701    46.07799