Region: SIO

                                     st77                  st81             st81/st77         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.06943     0.02754     0.07258     0.02781     1.05090     0.02129
                  Rrs_412     0.01307     0.00225     0.01317     0.00223     1.00880     0.00846
                  Rrs_443     0.01038     0.00146     0.01048     0.00144     1.00972     0.00604
                  Rrs_490     0.00653     0.00049     0.00661     0.00049     1.01215     0.00208
                  Rrs_510     0.00359     0.00019     0.00366     0.00019     1.01998     0.00253
                  Rrs_555     0.00158     0.00013     0.00163     0.00013     1.03509     0.00399
                  Rrs_670     0.00020     0.00005     0.00022     0.00005     1.10243     0.01767
                  aot_865     0.05925     0.01858     0.05933     0.01858     1.00148     0.00111
                 angstrom     0.79183     0.24687     0.78775     0.24754     0.99391     0.00861
                  epsilon     1.04259     0.02389     1.04216     0.02398     0.99958     0.00060