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Magnetograms are records of variations in the strength and direction of the Earth’s magnetic field. Historically these magnetograms were recorded on paper using photographic techniques. In the UK,...
This record is for Approval for Access product AfA162.2 'Historic GQA Headline Indicators of Water Courses - Chemistry (Wales). The General Quality Assessment (GQA) Headline Indicator scheme or...
This record is for Approval for Access product AfA162.1 'Historic GQA Headline Indicators of Water Courses - Chemistry - GQAHI (England)'. The General Quality Assessment (GQA) Headline Indicator...
This record is for Approval for Access product AfA161. The General Quality Assessment (GQA) Headline Indicator scheme or GQAHI (previously known as GQA) was the Environment Agency's national...
