- z<=7: min 2000m, limit 3000 - z==8: min 500m, limit 8000 - z==9: min 200m, limit 8000 - z==10: min 50m, limit 15000 - z>=11: no filter, limit 25000 Reduces row count from 25k to ~hundreds on z8 tiles.
- z<=7: min 2000m, limit 3000 - z==8: min 500m, limit 8000 - z==9: min 200m, limit 8000 - z==10: min 50m, limit 15000 - z>=11: no filter, limit 25000 Reduces row count from 25k to ~hundreds on z8 tiles.