Measurement Differences


	Forties Blend


	2006


	API

	Total Barrels

	Barrels Loss

	Barrels Loss

	Mean NSV Loss

	Standard Deviation

	Number of Records


	44.20


	92,923,023


	-228,129


	-0.25

%


	-0.24

%


	0.27

	151

%


	2005


	Mean NSV Loss

	Standard Deviation

	Number of Records


	-0.20

	0.19

	160

%

%