Measurement Differences


	Su Tu Den


	2006


	API

	Total Barrels

	Barrels Loss

	Barrels Loss

	Mean NSV Loss

	Standard Deviation

	Number of Records


	36.20


	8,857,345


	-27,467


	-0.31

%


	-0.26

%


	0.42

	25

%


	2005


	Mean NSV Loss

	Standard Deviation

	Number of Records


	-0.18

	0.58

	31

%

%