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Table 15. Temperature factors (f~) for correcting resistance ar~d <br />conductivity data on soil extracts to the standard temperature of 25° C. <br />• <br /> <br />°C. °F, fl °C. °F. fl °C, °F. fl <br />3.0 37.4 1.709 22.0 71.6 1.064 29.0 84.2 0.925 <br />4.0 39.2 1.660 22.2 72.0 1.060 29.2 84.6 .921 <br />5.0 41,0 1.613 22,4 72.3 1.055 29.4 84.9 .918 <br />6.0 42,8 1.569 22,6 72.7 1.051 29.6 85.3 .914 <br />7.0 44.6 1.528 22,8 73.0 1.047 29.8 85.6 .911 <br />8,0 46.4 1.488 23.0 73.4 1.043 30.0 86.0 .907 <br />9.0 48.2 1.448 23.2 73.8 1.038 30.2 86.4 .904 <br />10.0 50.0 1.411 23.4 74.1 1.034 30.4 86.7 .901 <br />11.0 51.8 1.375 23.6 74.5 1.029 30.6 87,1 .897 <br />12.0 53,6 1.341 23.8 74.8 1.025 30.8 87.4 .894 <br />13.0 55.4 1.309 24.0 75.2 1.020 31.0 87.8 .890 <br />14.0 57.2 1.277 24.2 75.6 1.016 31.2 88.2 .887 <br />15.0 59.0 1.247 24.4 75,9 1.012 31.4 88.5 .884 <br />16.0 60.8 1.218 24.6 76.3 1.008 31.6 88.9 .880 <br />17.0 62.6 1.189 24.8 76.6 1.004 31.8 89.2 .877 <br />18.0 64.4 1.163 25.0 77.0 1.000 32.0 89.6 .873 <br />18.2 64.8 1.157 25.2 77.4 .996 32.2 90.0 .870 <br />18.4 65.1 1.152 25.4 77.7 .992 32.4 90.3 .867 <br />18.6 65.5 1.147 25.6 78.1 .988 32.6 90.7 .864 <br />18.8 65.8 1.142 25.8 78.5 .983 32.8 91.0 .861 <br />19.0 66.2 1.136 26.0 78.8 .979 33.0 91.4 .858 <br />19.2 66.6 1.131 26.2 79.2 .975 34,0 93.2 .843 <br />19.4 66.9 1.127 26.9 79.5 .971 35.0 95.0 .829 <br />19.6 67.3 1.122 26.6 79.9 .967 36.0 96.8 .815 <br />19.8 67.6 1.117 26.8 80.2 .964 37.0 98.6 .801 <br />20.0 68.0 1.112 27.0 80.6 .960 38.0 100.2 .788 <br />20.2 68.4 1.107 27.2 81.0 .956 39.0 102.2 .775 <br />20.4 68.7 1.102 27.4 81.3 .953 40.0 104.0 .763 <br />20.6 69.1 1.097 27.6 81.7 .950 41.0 105.8 .750 <br />20.8 69.4 1.092 27.8 82.0 .947 42.0 107.6 .739 <br />21.0 69.8 1.087 28.0 82.4 .943 43.0 109.4 .727 <br />21.2 70.2 1.082 28.2 82.8 .940 44.0 111.2 ,716 <br />21.4 70.5 1,078 28.4 83.1 .936 45.0 113.0 .705 <br />21.6 70.9 1.073 28.6 83.5 .932 46.0 114.8 .694 <br />21.8 71.2 1.068 28.8 83.8 .929 47.0 116.6 ,683 <br />Taken fra~n Agriculture Handbook 60, U.S. Department of Agriculture, pg. 90 <br />6-44 <br />