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Staten Island(Station 242)' <br /> Deep Percolation=Precipitation-Evapotranspiration <br /> 2016 <br /> Month Precipitation(in) Evapotranspiration(in)Deep Percolation(in) <br /> Jan 4.89 1.21 3.68 <br /> Feb 0.89 2.77 <br /> Mar 6.09 3.5 2.59 <br /> Apr 1.43 5.63 <br /> May 0.27 6.59 <br /> Jun 0.00 7.97 <br /> Jul 0.00 8.39 <br /> Aug 0.00 7.05 <br /> Sep 0.00 5.64 <br /> Oct 5.78 3.01 2.77 <br /> Nov 1.42 1.76 <br /> Dec 4.28 1.35 2.93 <br /> Total 25.00 54.87 11.97 <br /> 2017 <br /> Month Precipitation(in) Evapotranspiration(in)Deep Percolation(in) <br /> Jan 12.68 1.17 11.51 <br /> Feb 8.22 1.65 6.57 <br /> Mar 2.54 3.81 <br /> Apr 2.58 4.42 <br /> May 0.06 7.51 <br /> Jun 0.06 7.98 <br /> Jul 0.00 8.34 <br /> Aug 0.00 7.21 <br /> Sep 0.00 5.42 <br /> Oct 0.15 4.5 <br /> Nov 2.56 1.54 1.02 <br /> Dec 0.07 1.91 <br /> 28.90 55.46 19.1 <br /> 2018 <br /> Month Precipitation(in) Evapotranspiration(in)Deep Percolation(in) <br /> Jan 5.76 0.94 4.82 <br /> Feb 0.16 3 <br /> Mar 2.34 3.1 <br /> Apr 0.49 4.86 <br /> May 0.19 6.96 <br /> Jun 0.00 8.42 <br /> Jul 0.00 8.09 <br /> Aug 0.01 6.29 <br /> Sep 0.01 5.59 <br /> Oct 0.02 4.33 <br /> Nov 2.53 2.09 0.44 <br /> Dec 2.82 1.35 1.47 <br /> 14.30 55.02 6.73 <br /> .Data from California Irrigation Management Information System(CIMIS) <br /> Average Recharge=(11.97 in+19.1 in+6.73 in)/3=12.60 in <br /> Standard Deviation(in)= 6.2 <br /> Eill 1xa -�l2 <br /> s- N- 1 ' <br /> (Wikipedia,2019) <br /> where{x1,x2,...,Xn)are the observed values of the sample items,x bar is the mean <br /> value of these observations,and N is the number of observations in the sample. <br /> Percent Error=Standard Deviation/mean`100% <br /> Percent Error= 49% <br /> Recharge Calculation Plate No.: 15 <br /> (Staten Island Station) Project No: 1939 <br /> California Islamic Center <br /> LIVE OAK 12882 N.Lower Sacramento Rd. Date: August 26,2019 <br /> GEO ENVIRONMENTAL INC. Lodi,CA <br />