Region: SPG

                                    sr052                  st72            st72/sr052         
                     Prod       mean       stdev        mean       stdev        mean       stdev
                  chlor_a     0.03360     0.01236     0.02865     0.01228     0.84205     0.10986
                  Rrs_412     0.01902     0.00236     0.01817     0.00221     0.95589     0.01209
                  Rrs_443     0.01346     0.00131     0.01324     0.00125     0.98456     0.01162
                  Rrs_490     0.00733     0.00035     0.00716     0.00032     0.97661     0.01474
                  Rrs_510     0.00364     0.00014     0.00355     0.00015     0.97521     0.02732
                  Rrs_555     0.00150     0.00010     0.00146     0.00012     0.97555     0.05053
                  Rrs_670     0.00027     0.00005     0.00020     0.00005     0.71726     0.11449
          tau_865,aot_865     0.10589     0.02911     0.06870     0.02083     0.64649     0.05872
           eps_78,epsilon     1.02685     0.02143     1.01979     0.01527     0.99337     0.01698
    angstrom_510,angstrom     0.26688     0.12759     0.51801     0.16353     2.30146     1.14030