JEQ -- Grimaldi et al. 33 (3): 994 Figure IG4

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Fig. 4. Bimonthly variations of NO₃^– and SO₄^2– concentrations in stream water (- ${circ}$ -) and weathered schist ground water in the three wells (WB, - ${diamondsuit}$ -; WS1, - ${blacktriangleup}$ -; WS2, - ${blacktriangledown}$ -).