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Thread: Age of magnetic variation data on CAA charts
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Old 4th July 2004 | 18:01
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bookworm
 
Joined: Aug 2000
Posts: 3,648
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From: UK
Which particular 2004 chart would this be? My 2004 CAA S England 1:500,000 has variation lines for July 2004, with an estimated decrease of 7 minutes per year. All stated in the legend in the bottom left.
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