Layer Estimates:

Layer: people_per_km (ID:0)
Count: 32817
Extent:

XMin: -19691654.525
YMin: -5989537.3565
XMax: 19879127.8121
YMax: -4046222.2374
Spatial Reference: 102100 (3857)

Layer: nz-roads-road-section-geometry (ID:1)
Count: 395124
Extent:

XMin: 18558757.8897753
YMin: -5927684.63335778
XMax: 19875733.9588076
YMax: -4086572.14625802
Spatial Reference: 102100 (3857)