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<br />002851 <br /> <br /> 60 <br /> 50 <br />. <br /> Sl 40 <br /> I- <br /> tii <br /> "- <br /> 0 30 <br /> a: <br /> w <br /> III <br /> :l1 <br /> ::> <br /> :2 20 <br /> 10 <br /> 0 <br />1 <br /> <br /> <br />Total Selenium <br /> <br />o 2 3 4 5 6 7 8 9 10 11 12 13 71 <br />CON CENTRA TION, IN MICROGRAMS PER LITER <br /> <br />Figure 9". - Frequency distribution of total selenium in streams <br />of the Yampa River basin, August-September 1975. <br /> <br />. 60 <br /> 50 <br />Ul 40 <br />w <br />I- <br />tii <br />"- Dissolved Copper <br />0 30 <br />a: <br />w <br />III <br />:l1 <br />::> <br />z 20 <br /> 10 <br /> 0 <br /> <br /> <br />o 2 3 4 5 6 7 8 9 10 11 12 13 550 <br />CONCENTRATION, IN MICROGRAMS PER LITER <br /> <br />Figure 9b. - Frequency di stribution of dissolved copper in streams <br />of the Yampa River basin, August-September 1975. <br /> <br />17 <br />