* Location: Piriac-sur-Mer lat=47.379166 - lon=-2.554166  iy=1123  ix=2072
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540000.000000,0.070263,0.000000,0.070263
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547200.000000,0.092935,0.000000,0.092935
550800.000000,0.105817,0.000000,0.105817
550800.000000,0.105817,0.000000,0.105817
