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Historical Weather in Active Sky 2012

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Hi, I already posted these questions on the Active Sky forum but have not received any replies.

If anyone has AS 2012, when winds aloft are given at various altitudes, such as 349@09(-6), I assume this means winds are from 349 degrees at 09 knots. What does the -6 mean?

Also, I wanted to fly using histrorical data from 11-14-2012. After downloading the data, the METAR data uses the correct data for the 14th. However, following this are Airmets and Sigmets that use the data of the actual current date (11-26-2012), Why aren't these dates from the 14th. also? Thanks. Tom

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