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5 <br />4 <br />a <br />~? 3 <br />W <br />v 2 <br />C <br />°' 1 <br />0 <br />--------------------------------------------- <br />Colorado River <br />-------------------- ----------------------------- <br />86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 <br />Year <br />FIGURE 5. - Mean CPE (CPM/hr) of Colorado pikeminnow in the Colorado River, <br />1986-2000. Vertical bars represent 95% confidence intervals; regression results are <br />provided in Table A-9. <br /> <br />L <br />V I <br />v <br />W <br />v <br />c <br />R <br />m ~ <br />L / <br />Upper Colorado River <br />- - <br />86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 <br />Lower Colorado River <br />86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 <br />Year <br />FIGURE 6. - Mean CPE (CPM/hr) of Colorado pikeminnow in upper (6) and lower <br />(7 and 8) reaches of the Colorado River, 1986-2000. Vertical bars represent 95% <br />confidence intervals; regression results are provided in Table A-9. <br />11 <br />