Potentially toxic phytoplankton counts from water samples collected from shellfish growing areas in Jersey from 2004 to 2019

Counts (in cells per litre) of potentially toxic algal cells for The States of Jersey analysed using the Utermohl method with light microscopy. These data are from water samples collected from designated shellfish growing areas around the coast of Jersey for the period 01/4/2004 - 31/3/2019.