Written in terms of Pikes Peak, and a touch scientific versus rules of thumbs - but good: http://www.skyrunner.com/story/pikespeako2.htm
Written in terms of Pikes Peak, and a touch scientific versus rules of thumbs - but good: http://www.skyrunner.com/story/pikespeako2.htm
Air at 7,000 feet is 3/4 of an inch thinner per every square 400m meters than at see level. So when you rent a storage unit in a town at 7,000 feet you are getting more space for the money.