I've set the status bar in expedition to show variation when displaying charts. If I place my cursor on the chart, the status bar shows a variation of 4'81''. When I calculate the variation manually I get 5'20''.

Does the variation in the status bar show the variation calculated to today by expedition from the chart's published date. So, my paper chart shows a variation of 11'00 W 1984 (10' E) which I calculated to 5'20''. At the same location expedition shows variation at 4'81, this suggests its doing the calculation, but want to be sure. Still new to nav so any feedback is helpful

Thanks,
Mike