Expedition Navigation Software 
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It could be interesting to have a variable that measures the barometer trend. Right now we can apply damping to the barometer (1 hour, etc.), but it would be very useful to know the actual trend — for example, −0.7 hPa over the last hour
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I use Stripchart and get a lot of use, knowing the drop/rise only tells part of the history. I think the history/how is more important.