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Quantifying Uncontrolled Landfill Gas Emissions from Two Florida ...

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Where:<br />

σ PICP = standard deviation of the predicted PIC vector;<br />

σ PICM = standard deviation of the measured PIC vector;<br />

PIC P = the mean of the predicted PIC vector; and<br />

PIC M = the mean of the measured PIC vector.<br />

The Pearson correlation coefficient is a good indicator of the quality of fit to the Gaussian<br />

mathematical function. In this procedure, typically an r close to 1 will be followed by an A very<br />

close to 1. This means that the averages and standard deviations in the two concentration vectors<br />

are very similar and the mass is conserved (good flux value). However, when a poor CCF is<br />

reported (CCF0.90). However, when both r and A are low one<br />

can assume that the flux calculation is inaccurate.<br />

A-5

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