Region: Mesotrophic Water

                        at18                at20           at20/at18         
          Prod     mean     stdev      mean     stdev      mean     stdev
       nLw_412     1.333     0.047     1.265     0.046     0.949     0.010
       nLw_443     1.217     0.040     1.154     0.043     0.948     0.006
       nLw_490     1.039     0.033     1.000     0.035     0.962     0.003
       nLw_510     0.484     0.019     0.465     0.019     0.962     0.003
       nLw_555     0.352     0.015     0.331     0.016     0.940     0.004
       nLw_670     0.027     0.001     0.025     0.001     0.899     0.005
       chlor_a     0.227     0.013     0.229     0.014     1.010     0.011
        eps_78     1.043     0.008     1.046     0.008     1.003     0.000
       tau_865     0.120     0.005     0.119     0.005     0.992     0.001
  angstrom_510     0.310     0.035     0.324     0.035     1.048     0.005