Region: PacS25

                                     tt18                  tt19             tt19/tt18         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.04201     0.00985     0.04154     0.01006     0.98766     0.03005
                  Rrs_412     0.01577     0.00210     0.01576     0.00209     0.99931     0.00220
                  Rrs_443     0.01162     0.00122     0.01161     0.00121     0.99910     0.00225
                  Rrs_488     0.00697     0.00043     0.00696     0.00042     0.99902     0.00242
                  Rrs_531     0.00227     0.00009     0.00226     0.00009     0.99602     0.00863
                  Rrs_547     0.00163     0.00008     0.00162     0.00008     0.99432     0.01321
                  Rrs_667     0.00013     0.00002     0.00013     0.00002     0.97948     0.03938
                  Rrs_678     0.00014     0.00002     0.00014     0.00002     0.98982     0.02458
                  aot_869     0.08001     0.01445     0.08182     0.01455     1.02331     0.02397
                 angstrom     0.60549     0.17326     0.61519     0.17500     1.01707     0.04239
                     nflh     0.00453     0.00097     0.00462     0.00096     1.02351     0.03603