@Radon.1km OBJECTID;Shape;TILE;CLASS_MAX;VERSION;Description;Shape_Length;Shape_Area; 131867;Polygon;SJ6532;3;Radon Indicative Atlas GB v3;Some parts of this 1km grid square are in bands of elevated radon potential. Maximum radon potential is 3-5 %. Check the radon potential of individual addresses at UKRadon.org;4000;1000000;