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SN90
Based in the Mid and West Wales region of Scotland,South Wales Central region of Scotland,South Wales East region of Scotland & South Wales West region of Scotland.
The SN90 10 square kilometre grid intersects with the settlements of Aberdare,Cefn Rhigos,Penderyn,Pontneddfechan,Rhigos,Treherbert & Twyn Bryn-hîr.
SN90
SN90 is within the post towns of Aberdare, Glamorgan, Ferndale, Glamorgan, Neath, Glamorgan, Port Talbot, Glamorgan & Treorchy, Glamorgan.
The square is within Castell-nedd Port Talbot - Neath Port Talbot, Merthyr Tudful - Merthyr Tydfil, Powys - Powys & Rhondda Cynon Taf - Rhondda Cynon Taf councils.
The SN90 national grid square measures 10 km by 10 km and has an area of 1,000 kilometres squared.
The technical term for a 10 km map square is a Hectad.
When this 10 km square is divided into a grid 10 by 10 it gives the next size of grid square. This unit is called a Monad and measures 1km square. 100 monads fit in a 10km square.
Out of the monads generated from square SN90, 437 are land and -337 are sea. Sea squares are disregarded on this site as they contain no land features.
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| Corner | Latitude | Longitude | Easting | Northing |
|---|---|---|---|---|
| South West Corner | 51.687949 | -3.595853 | 290000 | 200000 |
| South East Corner | 51.687949 | -3.448079 | 300000 | 200000 |
| North West Corner | 51.779705 | -3.595853 | 290000 | 210000 |
| North East Corner | 51.779705 | -3.448079 | 300000 | 210000 |