https://mastodon.social/media/KXxv-zVls66dD6TanDY

I think I might have finally nailed it.

Mercator projected map with points forming a grid with 10 degree steps. Highlighted is the one at latitude 0 and longitude 0.

Slightly confused that the map only seems to go from -80° (N) to 80° (S).

@ebel Does this look right to you? ^^;