By North Star
When processing at altitudes higher than 1,000 feet above sea level,
increase processing time as follows:
Altitude------------- Increase Processing Time
1,000 - 3,000 feet 5 minutes
3,001 - 6,000 feet 10 minutes
6,001 - 8000 feet 15 minutes
8,001 - 10,000 feet 20 minutes
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