As altitude increases, the available amount of oxygen to sustain mental and physical alertness decreases with the overall air pressure, though the relative percentage of oxygen in air, at about 21%, remains practically unchanged up to 21,000 metres (70,000 ft).
  State legislators in Texas (both representatives and senators) make a salary of $7,200 per year.
Average state worker salary: $56,028. The average salary for state employees in 2015 was $56,028 and the average cost per state employee including benefits was $89,000, according to a report from the Legislative Fiscal Office released Thursday. The median salary was $53,076 and median cost including benefits was $85,152. Employee compensation is 10 percent of the total state budget. The average salary of private sector employees was $45,893 in 2014, according to Employment Department economist Nick Beleiciks.