In the Basic Reporting Data, Werlich provides the altimeter settings for: “0255 CDT - 30.14 inches,” “0355 CDT - 30.12 inches,” and “0455 CDT - 30.11 inches” (3-4). The altimeter setting is a computed value of MSL pressure based on the International Civil Aviation Organization (ICAO) standard atmosphere expressed in hundredths of inches of mercury, which is used to set the sub-scale of an altimeter so the height scale indicates the pressure altitude of the instrument above MSL.