Measurement Differences


	Es Sider


	2006


	API

	Total Barrels

	Barrels Loss

	Barrels Loss

	Mean NSV Loss

	Standard Deviation

	Number of Records


	37


	34,433,871


	-122,169


	-0.35

%


	-0.35

%


	0.29

	56

%


	2005


	Mean NSV Loss

	Standard Deviation

	Number of Records


	-0.34

	0.16

	56

%

%