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Table 4.4-4. Calculation of historu herbacmus cover on prenine range sites A, B, and C acd <br />~ correspacd icg confidence interval. <br />i <br />Rage <br />Site Year <br />A 1979 <br />1980 <br />1981 <br />1982 <br />1983 <br />1984 <br />1985 <br />B <br />C <br />x annual <br />z corer x q <br />23.0 .56 .44 <br />34.7 <br />69.8 <br />75.2 <br />54.9 <br />74.5 <br />59.9 <br />1979 22.0 <br />1980 40.6 <br />1981 53.2 <br />1982 51.2 <br />1983 54.3 <br />1984 65.1 <br />1985 51.1 <br />1979 23.6 <br />1980 26.2 <br />1981 59.8 <br />1982 68.4 <br />1983 61.3 <br />1984 49.4 <br />1985 52.7 <br />(1) Table 1. <br />HBH/jb 5/87 <br />.482 .518 <br />.488 .512 <br />Calculated confidence interval <br />y = .9(.56) ± (1.895)(.1876) <br />y = 14.SSS cover <br />Based upon the ISLE, 14.852 corer is insufficient to <br />control excessive soil erosion. (1) <br />y = .9(.482) ± (1.895)(.1887) <br />y = 7.625 corer <br />Based upon the CSLE, 7.62X ewer is insufficient to <br />control excessive soil erosion. (1) <br />"y = .9(.512) ± (1.895)C.L889) <br />^y = !0.282 corer <br />Based upon the L6IE, 10.282 corer is insufficient to <br />control excessive soil erosion. (1) <br />4-102h <br />REVISED JUL 2 3 ~a~ <br />