Al Azizia, Libya, allegedly had the highest temperature ever measured on earth, 58 degrees Celsius/136,4 degrees Fahrenheit on September 13, 1922. Why is this record controversial?

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As stated on Wikipedia: "1. The weather station was at first in 'Aziziya town, but in 1919 it was moved to a hilltop fort, where the weather station was set up on black tarmac, which would have absorbed more sunlight and made the air there artificially hotter, explaining a period of very hot readings there from 1919 to 1928. 2. Shortly before the 13 September 1922 record reading, the weather station's usual maximum thermometer had been damaged, and replaced by an uncalibrated ordinary maximum-minimum thermometer such as often used in greenhouses." http://en.wikipedia.org/wiki/%27Aziziya A more detailed explanation can be found here: http://www.wunderground.com/blog/weatherhistorian/comment.html?entrynum=2 Dec 26 11, 3:49 AM