Tests of seasonality and trend over time of chlorophyll a and mucilage in Lakes Wakatipu, Hāwea and Wānaka.

The ranks of the mean values for each season are also shown. Data are monthly samples collected by the Otago Regional Council from September 2016 to June 2021 Austral seasons are: summer is December to February; autumn is March to May; winter is June to August; spring is September to November.