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2006 Edna Mine Vegetation Sampling Report <br />' Table 4-2: Herbaceous Cover & Production t-Test for Moffat Topsoiled BRU <br />' The Pittsburg & Midway Coal Mining Co <br />Edna Mine- Bond Release Sampling Yr 2 of 2 <br />Herbaceous Vegetation Cover t-Test <br />Moffat Topsoil VEGETATION PARAMETERS <br /> Herbaceous Vegetation <br />Cover Herbaceous Production <br />Mean 39.7 185.2 <br />Variance 273.7 20,043.2 <br />Standard Deviation 16.5 141 6 <br />Standard Error 3.0 22.4 <br />n 30.0 40.0 <br />Colorado: t-Test <br />t -5.958 -6.600 <br />t-test statistic 1 313 1.304 <br />Reclamation Pass Yes Yes <br />1 <br />i' Habitat Management, Inc. 39 October 19, 2006