Appendix D-2

Appendix D-2. Statistical difference in weekly gross alpha concentrations measured at Boundary and Distant locations.

		Mann-Whitney U Test^a
Parameter	Week		p^b
Gross Alpha
	July 3rd		0.67
	July 10th		0.09
	July 17th		0.48
	July 24th		0.86
	July 31st		0.48
	August 7th		0.81
	August 14th		0.87
	August 21st		0.15
	August 28th		0.08
	September 4th		0.03
	September 11th		0.73
	September 18th		0.0.5
	September 25th		0.48
Gross Beta
	July 3rd		0.09
	July 10th		0.01
	July 17th		0.67
	July 24th		0.20
	July 31st		0.48
	August 7th		0.94
	August 14th		0.14
	August 21st		0.71
	August 28th		0.03
	September 4th		0.09
	September 11th		0.91
	September 18th		0.89
	September 25th		0.89

a. See the Determining Statistical Differences of the Helpful Information section for details on the Mann Whitney U test. b. A ‘p’ value greater than 0.05 signifies no statistical difference between data groups.