Sampling point at AberdyfiSampling point at Aberdyfi RuralSampling point at BarmouthSampling point at Tal-y-BontSampling point at Dyffryn (Llanendwyn)Sampling point at LlandanwgSampling point at HarlechSampling point at Glan Don BeachSampling point at Porth NeigwlSampling point at AberdaronSampling point at Morfa NefynSampling point at Morfa DinlleSampling point at Llyn PadarnSampling point at LlanddwynSampling point at AberffrawSampling point at RhosneigrSampling point at Silver Bay RhoscolynSampling point at Borth WenSampling point at Trearddur BaySampling point at Porth DafarchSampling point at Church BaySampling point at CemaesSampling point at Traeth LligwySampling point at BenllechSampling point at St Davids - BenllechSampling point at LlanddonaSampling point at LlanfairfechanSampling point at PenmaenmawrSampling point at Llandudno West ShoreSampling point at Llandudno North ShoreSampling point at Colwyn Bay202017