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Statistical Analysis of Trends in the Red River Over a 45 Year Period

Statistical Analysis of Trends in the Red River Over a 45 Year Period

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CONCEN<br />

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CONCEN<br />

1 1.5<br />

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1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010<br />

1955 1960 1<br />

00 RED RIVER OF THE NORTH AT EMERSON, MANITOBA<br />

dsul<br />

POINTS: SEASONALLY ADJUSTED AND FLOW!ADJUSTED DATA<br />

LINE: TREND<br />

+ TREND<br />

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CONCENTRATION, AS BASE!10 LOGARITHM<br />

1995 2000 2005 2010<br />

JUSTED DATA<br />

CONCENTRATION,<br />

1 1.5<br />

AS BASE!10<br />

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LOGARITHM<br />

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1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010<br />

Figure A.64: Dissolved Sulphate Flow Adjustments — Seasonally adjusted and flow<br />

1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010<br />

adjusted data (po<strong>in</strong>ts) and no-trend (l<strong>in</strong>e).<br />

POINTS: SEASONALLY ADJUSTED AND DETRENDED DATA<br />

LINE: ANNUAL STREAMFLOW!RELATED ANOMALY<br />

POINTS: PARMA MODEL RESIDUALS<br />

LINE: LOWESS SMOOTH WITH F= 0.5<br />

RESIDUAL<br />

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Figure A.65: Dissolved Sulphate Flow Adjustments — Parametric no-trend model<br />

residuals (po<strong>in</strong>ts) and lowess smooth l<strong>in</strong>e with F = 0.5.<br />

90

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