Question:

What do all these 3-digit-numbers in the box mean on this weather chart? (see arrow down left)?!?

by  |  earlier

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http://i213.photobucket.com/albums/cc115/PilotFerdi/e2.png

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   Report

2 ANSWERS


  1. Local tropopause flight level.  Flight level 400 is a 40,000 foot pressure altitude.


  2. that is cool!  10 years removed from my instrument training, and i don't go anywhere near there - so i was scrambling for my books...thanks!

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