Mean winter surface concentrations of nitrate+nitrite in the Greater North Sea, the Celtic Seas and the Northeast Atlantic, 2003

Level of classification is based on the 20 % 40 %, 60 % and 80 % percentiles of the nitrate+nitrite distribution at coastal stations. The map is only available as a low resolution picture.
Geographical coverage note: the Greater North Sea, the Celtic Seas and th Northeast Atlantic