Photic zone GPP rates (7propagated standard error) varied between 6.5717.3 and 58.7712.2 mmol O2 m2 d1. A similar range was measured for CR, which varied from 16716.8 to 65.1711.7 mmol O2 m2 d1
. The 95% confidence intervals (C.I.) were calculated to analyze differences between metabolic rates estimations during the course of each Lagrangian experi-ment (Figs. 6a and b). The averaged rates for GPP were 35.6 and 30.8 mmol O2 m2 d1 during the L1 and L2 experiments, respectively, and the averaged rates for CR were 41.4 and 44.9 mmol O2 m2 d1 during the L1 and L2 experiments respec-tively. Each day, neither GPP nor CR rates were significantly different from the averaged value of the corresponding Lagrangian experiment.