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v.8.7.009. EPA ma.0.01 <br /> SENS SLOPE ESTIMATOR <br /> n = 71. <br /> Slope = 0.335 <br /> ♦ <br /> units per year. <br /> a Mann Kendall <br /> normal approx. _ <br /> z <br /> 8.876. <br /> Increasin trend <br /> significant at 99% <br /> z confidence level <br /> (two tailed). <br /> Critical value = 2.575. <br /> 2 <br /> 0 <br /> Aug 1991 Jun 2000 May 2009 <br /> Hollow symbols indicate censored values. <br /> Constituent: Nitrate as N (mg/L) Facility: Austin Road LF Data File: AUSTININFLAG <br /> Date: 6/11/09, 10:16 AM Client: Austin Road LF View: Batch <br /> ERST & ASSOCIATES, INC." <br />