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<br /> <br /> DISTANCE FROM MOUTH. IN KILOMETEIlS <br /> 310 300 290 280 270 280 2&0 <br /> 1.4 <br /> 0 <br /> 0 <br /> YM-11 SITE NUMBER r>3 <br /> a: e", <br /> ... 1.2 = <br /> .. MAXIMUM OBSERVED <br /> ::; I 01 <br /> a: CONCENTRATION <br /> ... <br /> 0. <br /> '" AVERAGE OBSERVED <br /> :Ii CONCENTRATION <br /> ~ 1.0 <br /> '" MINIMUM OBSERVED <br /> ::; <br /> .... CONCENTRATION <br /> :E <br /> ~ + ONE SAMPLE DR NO <br /> z 0.8 VARIATION <br /> 0 <br /> ;: YM-3 COMPUTED BY PIONEER-I <br /> ~ I MODEL <br /> .. <br />w ffi COMPUTED BY <br />0 () 0.6 ---- <br /> z U.S. GEOLOGICAL <br /> 0 <br /> () SURVEY MODEL <br /> z <br /> ... <br /> " <br /> 0 <br /> a: 0.4 <br /> !: <br /> z <br /> ~ r-------.....r-I <br /> z I I <br /> 0 I <br /> :Ii 0,2 I <br /> :Ii ---__J ----~__...r--------------, <br /> <( L r--.s-- <br /> YM-1 YM-4 YM~ <br /> :p~2 I YM-6 YM-7 YM-9 YM-13 YM-14 <br /> YM--01 + + + YM-8 YM-l0 YM-11 YM-12 <br /> 0.0 + + + + <br /> 185 110 186 110 175 170 165 1&0 155 <br /> DISTANCE FROM MOUTH. IN MILES <br /> <br />Figure 17.-- Computed versus observed concentrations of ammonia nitrogen in the Yampa River, <br />September 23-24, 1975 (U ,S. Geological Survey and Pioneer-I models). <br /> <br />~'" <br /> <br />