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.
Troup, TX Profile: Facts, Map & Data. Troup, Texas - Basic Facts. The City of Troup had a population of 1,810 as of July 1, 2016. The primary coordinate point for Troup is located at latitude 32.1457 and longitude -95.1221 in Smith County. The formal boundaries for the City of Troup (see map below) encompass a land area of 2.4 sq. miles and a water area of 0.01 sq. miles.