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v.8.7.009. EPA m.a.0.01 <br /> SEWS SLOPE ESTIMATOR <br /> 1 <br /> n = 42. <br /> Slo e = -0.074 <br /> ® units per year. <br /> a 1 Mann Kendall <br /> normal approx. _ <br /> z -3.754. <br /> ® Decreasing trend <br /> significant at 99% <br /> z confidence level <br /> 5 (two tailed). <br /> Critical value = -2.575. <br /> Mar 1997 Aug 2002 Feb 2008 <br /> Hollow symbols indicate censored values. <br /> Constituent: Nitrate as N (mg/L) Facility: French Camp LF Data File: FRENCHIN <br /> Date: 4/1/08, 8:45 AM Client: French mp LF View: Batch <br /> HERST & ASSOCIATES, INC.` <br />