Region: PacN45

                                     tt17                  tt18             tt18/tt17         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.38464     0.15403     0.25503     0.05189     0.74089     0.24014
                  Rrs_412     0.00518     0.00195     0.00586     0.00159     1.30895     0.67209
                  Rrs_443     0.00430     0.00151     0.00529     0.00115     1.41725     1.14606
                  Rrs_488     0.00394     0.00106     0.00457     0.00085     1.19605     0.19806
                  Rrs_531     0.00240     0.00051     0.00256     0.00047     1.07138     0.06548
                  Rrs_547     0.00196     0.00039     0.00198     0.00039     1.01185     0.03002
                  Rrs_667     0.00019     0.00005     0.00020     0.00005     1.02967     0.13439
                  Rrs_678     0.00025     0.00006     0.00027     0.00006     1.09483     0.12023
                  aot_869     0.09305     0.02416     0.09301     0.02435     0.99918     0.00289
                 angstrom     0.74151     0.33026     0.74582     0.33047     1.00742     0.00640
                     nflh     0.01150     0.00493     0.01380     0.00449     1.31626     0.40701