Region: Oligotrophic Water

                                     tt18                  tt19             tt19/tt18         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.05505     0.00596     0.05464     0.00613     0.99219     0.01722
                  Rrs_412     0.01407     0.00079     0.01406     0.00079     0.99960     0.00153
                  Rrs_443     0.01060     0.00047     0.01060     0.00046     0.99948     0.00150
                  Rrs_488     0.00672     0.00017     0.00671     0.00017     0.99942     0.00130
                  Rrs_531     0.00230     0.00003     0.00230     0.00004     0.99708     0.00492
                  Rrs_547     0.00167     0.00003     0.00166     0.00003     0.99566     0.00775
                  Rrs_667     0.00014     0.00002     0.00013     0.00002     0.98406     0.02224
                  Rrs_678     0.00015     0.00001     0.00015     0.00001     0.99277     0.01299
                  aot_869     0.08186     0.00461     0.08334     0.00467     1.01820     0.01565
                 angstrom     0.66660     0.07863     0.67289     0.07831     1.00974     0.01923
                     nflh     0.00499     0.00066     0.00508     0.00067     1.01847     0.01877