ROLEKangshoe Fig. 4. The gecgraphic.l varfability of the garma-ray ex, wie rates (UR/h) measured 1m at ove the groand . on Bikini Island. Tue contribution due to cosmic radiacien has been substracted. The contour: tere draen on the basis of the data siiovn in the Appendix. The strai,ni iines dravn across the island dena ce boundaries of land parcels (wato.) owned by the families whose names uppear ia the upper part of the photograph. “9