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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />Figure 12. <br />G~ . ad Water: Ortho Phosphate /Nitrite <br />Ortho Phosphate <br />0.16 <br />O.la <br />0 1' <br />^, 0.1 <br />°~ O.n3 <br />0.06 <br />o.oa <br />o.oz <br />0 <br /> ' <br /> <br /> j <br />Dec-Si Deo88 Dec-89 Dec-90 <br />Nitrite <br />s <br />a.5 <br />a <br />3.5 <br />3 <br />_ '_.5 <br />1.5 <br />1 <br />OS <br />0 <br />Dec-37 <br />-~-TR-7.5 ~ TR-3 -•-1R-4 ~-wR~l <br />Dec-91 Dec~92 <br />Der91 <br />Dec-88 Dec-89 Dec-90 <br />22 <br />Dec-9: <br />