Radon Measurements for Racine County   The numbers of results at various radon levels, tabulated below, are from measurements in basements, up to a week in duration, while windows are kept closed. Because there is less radon upstairs and less when windows are open, this table represents neither average resident exposures nor their lung cancer risks from radon.   Racine County Measurement Summary - 2006 Numbers of Measurements versus Radon: No. of Measurements Zip Code Total No.      # 4 - 10 pCi/L* # >10 pCi/L Ave. pCi/L High pCi/L 53103 53105 53108 53120 53126 53132 53138 53139 53140 53144 53149 53150 53154 53167 53168 53177 53182 53185 53401 53402 53403 53404 53405 53406 53407 53414 53416 53419 53421 53431 53432 53438 53445 53447 53449 53452 53464 53481 131 369 51 133 11 607 4 37 195 158 440 478 241 18 78 66 62 207 21 375 206 192 240 337 3 14 1 2 2 1 1 1 1 1 1 1 2 1 48 134 15 42 39 261 0 14 26 53 166 202 84 7 28 24 14 82 5 89 56 35 90 132 0 5  1 1 1 0 1 0 1 0 1 0 1 0 33 48 9 25 7 74 0 8 12 19 63 78 36 5 4 21 12 36 5 17 15 6 25 55 0 1 0 0 0 0 0 0 0 0 0 1 0 0 8.0 5.4 5.5 8.1 4.3 5.5 1.2 5.8 2.9 6.6 5.5 6.2 5.8 13.6 4.1 7.4 6.0 6.6 6.6 3.4 4.2 2.8 6.1 6.1 0.9 5.0 8.7 5.5 4.6 1.4 7.7 0.8 12.0 3.9 5.1 21.0 2.4 1.3 53.4 64.0 23.3 55.1 19.2 53.8 1.7 16.1 21.4 72.9 35.2 64.0 100.0 54.5 27.6 28.3 37.6 110.0 36.5 36.0 58.3 18.4 101.3 34.6 2.7 17.4 8.7 9.7 6.7 1.4 7.7 0.8 12.0 3.9 5.1 21.0 4.2 1.3 Zip Code      No. of Measurements      Ave. pCi/L      High pCi/L Total No.     # 4 - 10 pCi/L*     # >10 pCi/L * pCi/L: picoCuries per Liter, a measure of radon concentration The data were obtained largely from companies that sell radon detectors to the public, and are only a fraction of all radon measurements that have been made in Wisconsin. For estimating the fraction of houses with average occupant exposures greater than 4 pCi/L for the radon averaged over a year on the main floor: divide the number in the ">10 pCi/L" column by the number in the "Total No." (of measurements) column. The data listed for Zip Codes crosses county borders. Information provided by the Wisconsin Department of Health and Family Services.