Region: AerCOVE

                                     tt17                  tt18             tt18/tt17         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     3.75717     2.19500     2.69993     1.17457     0.80326     0.24332
                  Rrs_412     0.00273     0.00204     0.00320     0.00108    -0.24730    11.56577
                  Rrs_443     0.00304     0.00130     0.00366     0.00099     1.35306     1.27389
                  Rrs_488     0.00434     0.00122     0.00472     0.00124     1.09830     0.12267
                  Rrs_531     0.00520     0.00146     0.00526     0.00149     1.01026     0.03431
                  Rrs_547     0.00514     0.00156     0.00513     0.00156     0.99757     0.02737
                  Rrs_667     0.00142     0.00080     0.00139     0.00081     0.97178     0.06161
                  Rrs_678     0.00141     0.00078     0.00140     0.00079     0.98947     0.05321
                  aot_869     0.08347     0.04046     0.08359     0.04064     1.00125     0.01802
                 angstrom     1.22514     0.40375     1.24117     0.39672     1.01852     0.02898
                     nflh     0.01575     0.00857     0.01849     0.00900     1.29350     0.47164