Measurement Differences


	Upper Zakum


	2006


	API

	Total Barrels

	Barrels Loss

	Barrels Loss

	Mean NSV Loss

	Standard Deviation

	Number of Records


	34.20


	29,764,464


	-94,622


	-0.32

%


	-0.35

%


	0.43

	34

%


	2005


	Mean NSV Loss

	Standard Deviation

	Number of Records


	-0.22

	0.16

	21

%

%