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.
Ryan Duffy, a spokesman for House Speaker Will Weatherford, said the records are the ones most frequently requested. The House website shows, for example, that 32 employees in the House earn $100,000 or more a year, while the Senate website also lists 32 employees earning at least $100,000. The governor already has his own website, FloridaHasARightToKnow, which gives the public access to state employee salary information.