Region: AerCOVE

                                     tt20                  tt21             tt21/tt20         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     3.83596     2.29495     2.69574     1.16090     0.79418     0.26013
                  Rrs_412     0.00270     0.00203     0.00307     0.00103    -4.41835    43.62378
                  Rrs_443     0.00295     0.00133     0.00360     0.00095     1.61088     2.48527
                  Rrs_469     0.00395     0.00113     0.00443     0.00114     1.14837     0.22373
                  Rrs_488     0.00429     0.00122     0.00471     0.00122     1.11233     0.13784
                  Rrs_531     0.00517     0.00144     0.00525     0.00149     1.01636     0.04380
                  Rrs_547     0.00510     0.00153     0.00512     0.00156     1.00173     0.03569
                  Rrs_555     0.00475     0.00146     0.00477     0.00152     1.00336     0.04370
                  Rrs_645     0.00176     0.00095     0.00172     0.00101     0.95527     0.09953
                  Rrs_667     0.00140     0.00079     0.00139     0.00081     0.97644     0.07007
                  Rrs_678     0.00139     0.00077     0.00140     0.00080     1.00118     0.07286
                  aot_869     0.08503     0.04026     0.08540     0.04057     1.00384     0.02611
                 angstrom     1.21911     0.41019     1.23723     0.39980     1.02417     0.07166
                      flh     0.01144     0.00557     0.01412     0.00588     1.36314     0.52296