It defenitely needs improvement. But I think it’s not too bad, sometimes your data is complex and is not easy to make one single overview figure, especially if spatial data is involved. The figure caption probably makes it clearer…
I guess the std dots were selected because error bars would mess the figure up entirely, as there are many data points. The map is probably used to link the color to the dots, but I mean we have a tool called “legend” for that. If that’s the case, what are the colored dots on the map? And yeah, the X-Axis lacks a unit.
The longer I looo the more difficult it gets, and I would expect more quality by a Nature peer review…