1. The images with the cities was created by flattening this interactive charts:
where dots can be hovered with a mouse, and name + exact value should appear. This can help troubleshoot this or any other issue
2. what was there in the data as 'SF Bay Area' was merged to 'San Francisco'. I've no idea how good assumption was that.
3. The small dots in California are for Oakland, San Jose, Berkley, Concord + few more.