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<br />Secchi Disc Transparencies `-`Y~=--~~'~-~- <br />Cate__gories IV and V i <br />1.00 ~ Category Ill <br />Cate o II <br />~~ <br />y 2.00 _ <br />__-_ i <br />~ T CTategory I <br />3.00 ~_ T_ ~- ~ ~ _ ~ 1 ~ <br />R ~ ~ ~ i <br />y 4.00 r 7, '' I __ <br />5.00 ~ ,~ _ ~ <br />I <br />L Trendline (1997- 006) <br />V Significant at the 95 % Co fidence Level Lake <br />d 6.00 <br />to Classification <br />7.00 System <br />1970 1975 1980 1985 1990 1995 2000 2005 2010 <br />Surface Chlorophyll a Concentrations <br />so.oo _ _ _ __ <br />3 <br />70.00 <br />o so.oo <br />so.oo <br />a~ <br />0 40.00 <br />U <br />m 30.00 ~ I I Trendline (1997-2006) <br />- r <br />T £ 1 1 Significant at the 85 % Confidence Level <br />a 20.0o T 1 T ~ <br />T 1 T <br />~ 10.00 ¢1 <br />0.00 ljj -lp <br />1970 1975 1980 1985 1990 1995 2000 2005 <br />Surface Total Phosphorus Concentrations <br />1so.oo <br />rn <br />~ 1so.ao <br />c <br />140.00 <br />R <br />L <br />C 120.00 <br />N <br />U <br />c 100.00 <br />v <br />y 80.00 <br />7 <br />~ 60.00 <br />!Z <br />p 40.00 <br />L <br />a 20.00 <br />M <br />~ 0.00 <br />2010 I <br />Trendline (1997-2006) <br />No SignificantTrend_ <br />1 <br />1 1 <br />T4 1 ~€£~ I§ Tr <br />1970 1975 1980 1985 1990 1995 2000 2005 2010 f <br />Note: All data points represent the summer average value (± 1 Standard Error). <br />