- woe ae uae tes a 7 toad a rn . a =z r ae a eee et .. 297 T oe patty Rae Spe he ert Pedals BS ah A SrOG Bes adhe ald i Syria ad aol= td es de reg hs bd a i ek asdt ie Phy ied itspy gg, be Pets Syn egy patete eebbiyPega ren ot Cel ee eeeiteeesaera ceGees Cleese ceate Soa eRee SoeCL a ecg coat Se —_— ABSTRACT | Preliminary data showing ambient concentrations of radon in the Metro- politan New York area are presented. An attempt has been made to define the variability of concentration of radon in the general atmosPhere with location, time, and weather conditions. Samples have been analyzed from the outdoor air, inside of buildings, and above and below the surface of the ground. Comparisons with the data obtained by other investigators are also shown. ay \— agz _\