To make things a little bit interesting, I've removed the map backgrounds. All you know is that all the maps are approximately the same scale. Also, I've taken maps from several different pressure levels. Finally, the contour intervals are different on different maps. Well, don't panic.
Wind speeds are proportional to the strength of the height gradient.
If you read the height contour labels, you can get both the altitude and the strength of the height gradient. All rights Reserved.