Value of time Value of date and time A restricted format identifier used to uniquely identify an item A user-defined identifying name Freeform text intended to be interpreted only by humans Remarks and/or comments A remark/comment. Additional implementation-specific information An instance of implementation-specific information. The XML elements storing the information. Identifier used to reference this instance. Value of a location Value of viscosity Value of height of the kelly bushing Value of an amount of fuel Value of temperature Value of a diameter of a tubular Value of a depth Value of lengths of drilling assembly Value of density Value of linear mass Value of pump stroke length Value of weight Value of pressure Value of torque Value of water loss Value of a volume Value of a result from a mud test Value of a quantity of mud material Value of usage time Value of a pump id