As an example, consider a unit area of 1 square inch. At sea level, the weight of the air above this unit area would (on average) weigh 14.7 pounds! That means pressure applied by this air on the unit area would be 14.7 pounds per square inch.Meteorologists use a metric unit for pressure called a millibar and the average pressure at sea level is 1013.25 millibars.t sea level, the weight of the air above this unit area would (on average) weigh 14.7 pounds! That means pressure applied by this air on the unit area would be 14.7 pounds per square inch. Meteorologists use a metric unit for pressure called a millibar and the average pressure at sea level is 1013.25 millibars.
Troup, Texas. Troup is a city in Smith and Cherokee counties in the U.S. state of Texas. The population was 1,869 at the 2010 census. Troup lies in two counties as well as two core based statistical areas.
Brewster County, Texas. Brewster County is a county located in the western part of the U.S. state of Texas. As of the 2010 census, the population was 9,232.[1] Its county seat and only city is Alpine.[2] The county is named for Colonel Henry Percy Brewster, a Secretary of War for the Republic of Texas. Brewster County is the largest county by area in the state, over three times the size of the state of Delaware, and more than 500 square miles (1,300 km 2) bigger than Connecticut.