2018 dates
Estuary Day Month Location
Medway 26 August 1100 Chatham
Medway 6 October 0900 Chatham
Medway 7 October 1000 Chatham
Thames 20 October 1200 Richmond
Thames 21 October 0800 London
Once sorted;
medway 13 samples from 4 samples, 3 sites
thames 11 samples from 6 samples from 6 sites.