Currently, map labels can look like labels for bars in the chart. This is confusing for users. I suggest adding a semi-transparent background for the chart and surrounding area so that users can't easily see the map labels, but are still aware of the map context.
cschroedl-gov
commented
9 years ago 
Currently, map labels can look like labels for bars in the chart. This is confusing for users. I suggest adding a semi-transparent background for the chart and surrounding area so that users can't easily see the map labels, but are still aware of the map context.