Calcium fluxes (mol Ca2+ m-2 s-1) at all experimental light levels (μmol photons m-2 s-1) and two pH levels (8.12, 7.80) in the absence and presence (+AZ) of acetazolamide.

Fluxes were calculated from profiles in Fig 8 (CCA I; top) and additional profiles from CCA II (bottom, profiles not shown). Data are means ± SE of multiple measurements from each CCA.