Rob Olson Biology Department Woods Hole Oceanographic Institution March 18, 1997 Notes on revised picophytoplankton data for TTN049, Process Cruise 4 Two important changes were made: 1. Correction was made for a software flaw which resulted in miscalculation of the analysis time and thus produced a 10%-15% error in cell numbers. 2. Cells observed in deep secondary chlorophyll maxima at the sub-oxic zone and previously classified as picoeukaryotes were reclassified as Prochlorophytes.