Radon Measurements for Milwaukee County   The information stated below has been obtained from the Wisconsin Department of Health and Family Services.  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.   Milwaukee County Measurement Summary - 2006 Numbers of Measurements versus Radon: No. of Measurements High pCi/L High pCi/L High pCi/L High pCi/L High pCi/L High pCi/L 53110 53126 53129 53130 53132 53154 53172 53201 53202 53203 53204 53205 53206 53207 53208 53209 53210 53211 53212 53213 53214 53215 53216 53217 53218 53219 53220 53221 53222 53223 53224 53225 53226 53227 53228 53230 53233 53234 53235 53239 53240 53242 53246 53267 53268 53270 53272 53273 53286 53288 53289 53295 53305 53306 53326 163 111 288 213 607 241 234 1 381 8 68 8 17 348 145 297 106 308 53 493 522 185 160 725 193 411 305 362 451 320 137 177 574 427 161 53230 15 5 41 2 1 1 2 2 1 1 1 4 1 2 1 3     1 2 1 59 39 106 103     261     84     95     0     30     0 12     2     3     72     38     96     17     37     16     109 91 23     25     133     68     87     117     114     168     119 44     52     201     143     68     2     5     1     6     1     0     0     2     0     0     1     0     0 0     2     0     1     0 0     1 7 7     36     32     74     36     12     0     13     0     0     1     0     17     2     28     2     7     4     19     33     1     6     20     5     19     8     24     24     23     15     23     52     19     20     0     1     0     0     0     0     0     0 0 0 0     1     0     0     0 1     0     0     0     0 3.9 4.3      5.1      6.5 5.5      5.8      4.1      3.0      2.1      1.5      2.4      4.5      2.1      3.5      3.1      4.7 2.6      2.4      3.7      3.2      3.1      2.4      2.6      2.9      3.6      3.2      3.9      4.2      4.5      4.6      5.4      5.2      4.6      4.1      5.6 4.0      5.0      1.4      2.6 2.3      2.7      0.7      5.6      1.3      3.0 4.1 11.0 1.8      3.7      5.1      12.4      2.2      2.6      0.7      8.7 30.8 19.2 41.8 110.0 53.8 100.0 19.5 3.0 42.0 2.8 10.0 16.0 6.3 44.5 43.1 25.0 13.1 18.9 14.7 30.3 78.3 40.3 39.9 25.9 12.8 23.4 35.5 47.0 32.1 78.3 57.0 44.1 48.6 28.8 24.4 4.0 28.0 1.9 9.8 4.3 2.7 0.7 6.7 2.0 3.0 4.1 11.0 3.8 3.7 6.2 12.4 5.9 2.6 0.7 8.7 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.