The Chl-a data and nutrients for Windermere south basin are published with the EIDC:

Maberly, S.C.; Brierley, B.; Carter, H.T.; Clarke, M.A.; De Ville, M.M.; Fletcher, J.M.; James, J.B.; Keenan, P.; Kelly, J.L.; Mackay, E.B.; Parker, J.E.; Patel, M.; Pereira, M.G.; Rhodes, G.; Tanna, B.; Thackeray, S.J.; Vincent, C.J.; Feuchtmayr, H. (2017). Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Windermere South Basin, 1945 to 2013. NERC Environmental Information Data Centre. https://doi.org/10.5285/e3c4d368-215d-49b2-8e12-74c99c4c3a9d

The nutrient concentrations for North Basin are published in the EIDC: Maberly, S.C.; Brierley, B.; Carter, H.T.; Clarke, M.A.; De Ville, M.M.; Fletcher, J.M.; James, J.B.; Keenan, P.; Kelly, J.L.; Mackay, E.B.; Parker, J.E.; Patel, M.; Pereira, M.G.; Rhodes, G.; Tanna, B.; Thackeray, S.J.; Vincent, C.J.; Feuchtmayr, H. (2017). Surface temperature, surface oxygen, water clarity, water chemistry and phytoplankton chlorophyll a data from Windermere North Basin, 1945 to 2013. NERC Environmental Information Data Centre. https://doi.org/10.5285/f385b60a-2a6b-432e-aadd-a9690415a0ca