the yellow ring is showing the spin distance. i will unhighlight that so you can see the cells better.
this map is a map of ingress portals. since the split with scopely, this is no longer updating. to be sure if there is already a wayspot in a cell that looks empty here, you can check in the nomination map screen by turning the toggle on. you have to be standing right there, but it will show you wayspots that exist but are not pokestops or gyms, like this:
and you can tap on the ! to see what the wayspot is.