Measurement Differences


	Brent Blend


	2006


	API

	Total Barrels

	Barrels Loss

	Barrels Loss

	Mean NSV Loss

	Standard Deviation

	Number of Records


	37.90


	51,349,419


	-83,876


	-0.16

%


	-0.17

%


	0.13

	84

%


	2005


	Mean NSV Loss

	Standard Deviation

	Number of Records


	-0.14

	0.15

	77

%

%