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Old 10-12-2012, 14:57   #67
Al Czervik
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Join Date: Aug 2006
Location: Bushwood
Posts: 1,687
^^^




A good rule is about 4 degrees per thousand. So if it is 65 on the ground, and you are going to 13,500, expect it to be around 10-11 degrees at altitude.
A light T-neck and jeans will be fine as you will probably have a stinky, old jumpsuit on top. When you exit, you probably won't notice the temperature anyway.
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