Ivo, job well done. However, I would like to see the label in hPa in whatever zoom I have of the map, so I can see the gradient between the lines, if the pressure is increasing/decreasing from north/south, east/west wherever the gradient is. I hope you understand what I'm trying to say, if not, I can maybe send you a screenshot of what I mean. Kudos to you!
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RE: Pressure isolines are here