Question 97947
239 Degrees at 15000 ft is wrong. the boiling temperature drops as Altitude increases, it does not increase in boiling temp as you show. 

Further you state that the boiling temperature drops by 1.8degrees for every 1000 feet. i agree. however, 1.8x15 = 27, 212-27 = 185degrees for water to boil at 15,000feet. Not 239degrees. this would be the case if it were 15,000ft BELOW sea level.