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TE-WILBUR OPERATIONS MANUAL REV 002.15 06/11/2015
Tisch Environmental 1-TSP-AND-PM10 sales@tisch-env.com www.tisch-env.com Page 67 of 183
 

Where n = the number of data points
y = flow calibrator values
x = sampler flow values
To calculate the intercept of the line the following formula is used:
 


Where m = the slope calculated above
The flow can then be adjusted using the following formula:
 
Correlation Coefficient (r) - the closer this value is to 1.0 the better fit of the
regression line. Simply put, the closer the line passes through all the points
and the more accurate it is. A value of 1.0 is a perfect Correlation Coefficient
any value less than 0.98 fails a calibration.
The Correlation Coefficient (r) is calculated by the following formula:
  

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