Region: PacN15

                                     tt21                  tt22             tt22/tt21         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.04721     0.00296     0.04752     0.00340     1.00643     0.00892
                  Rrs_412     0.01490     0.00087     0.01493     0.00083     1.00175     0.00246
                  Rrs_443     0.01092     0.00089     0.01094     0.00087     1.00162     0.00227
                  Rrs_469     0.00910     0.00101     0.00911     0.00100     1.00103     0.00144
                  Rrs_488     0.00692     0.00044     0.00693     0.00042     1.00131     0.00183
                  Rrs_531     0.00229     0.00017     0.00230     0.00016     1.00351     0.00490
                  Rrs_547     0.00166     0.00012     0.00167     0.00011     1.00452     0.00630
                  Rrs_555     0.00129     0.00000     0.00130     0.00001     1.00578     0.00807
                  Rrs_645     0.00012     0.00002     0.00012     0.00002     1.02978     0.04136
                  Rrs_667     0.00013     0.00008     0.00013     0.00007     1.02019     0.02831
                  Rrs_678     0.00013     0.00002     0.00013     0.00001     1.01031     0.01406
                  aot_869     0.09047     0.02353     0.08939     0.02202     0.98986     0.01411
                 angstrom     0.62962     0.12494     0.63734     0.13582     1.01076     0.01515