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v.8.7.009. EPA m.a.0.01 <br /> N'S SLOPE ESTIMATOR <br /> 30 <br /> ^ 25 n = 50. <br /> Slope = -0.054 <br /> 20 <br /> units per year. <br /> E Mann Kendall <br /> normal approx. _ <br /> a -2.72. <br /> 0 15 <br /> Decreasin trend <br /> sigmficanfat 99% <br /> confidence level <br /> 10 two tailed). <br /> Critical value = -2.575. <br /> 5 <br /> 0 <br /> Jul 1995 Sep 2001 Nov 2007 <br /> Hollow symbols indicate censored values. <br /> Constituent: Dichlorodifluoromethane (ug/L) Facility: Austin Road LF Data File: AUSTINOR <br /> Date: 12/17/07, 1:55 PM Client: Austin Road LF View: Batch <br /> HERST OCIATES, INCA <br />