Region: SPG

                                     at56                  at57             at57/at56         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.03175     0.01340     0.03153     0.01311     0.99452     0.00684
                  Rrs_412     0.01765     0.00474     0.01763     0.00476     0.99887     0.00145
                  Rrs_443     0.01318     0.00312     0.01317     0.00313     0.99898     0.00130
                  Rrs_488     0.00753     0.00091     0.00752     0.00092     0.99901     0.00122
                  Rrs_531     0.00236     0.00017     0.00235     0.00018     0.99763     0.00298
                  Rrs_547     0.00171     0.00014     0.00170     0.00015     0.99684     0.00394
                  Rrs_667     0.00017     0.00002     0.00017     0.00002     0.99377     0.00801
                  Rrs_678     0.00018     0.00004     0.00018     0.00004     0.99565     0.00571
                  aot_869     0.06845     0.00031     0.06893     0.00029     1.00698     0.00877
                 angstrom     0.71284     0.60433     0.71225     0.60466     0.99840     0.00181
                      flh     0.00279     0.00047     0.00279     0.00047     1.00268     0.00174