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Data were recorded from up to 225 x 1km squares sited across Wales, selected by random stratified sample (not all squares surveyed in this program contained headwater streams). The survey was managed by the UK Centre for Ecology & Hydrology. 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Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Ordnance Survey Data. Ordnance Survey Licence number AC0000849444. Crown Copyright and Database Right.","code":"copyright"},{"value":"© Hawlfraint y Goron: Llywodraeth Cymru Mae'r holl gynnwys ar gael dan Drwydded Llywodraeth Agored v3.0. Yn cynnwys gwybodaeth Cyfoeth Naturiol Cymru © Cyfoeth Naturiol Cymru a Hawl Cronfa Ddata. Cedwir pob hawl. Yn cynnwys Data Arolwg Ordnans. Rhif Trwydded yr Arolwg Ordnans AC0000849444. Hawlfraint y Goron a Hawliau Cronfa Ddata.","code":"copyright"},{"value":"For the avoidance of doubt, if the publication of the Licensed Data is not within Wales, the Welsh form of the acknowledgement wording is not required.","code":"otherRestrictions"}]}