Layer Estimates:

Layer: Island outline (ID:1)
Count: 5
Extent:

XMin: -177092.773025795
YMin: 6546150.85025277
XMax: -118910.180890329
YMax: 6580521.16450451
Spatial Reference: 102100 (3857)

Layer: Towns (ID:2)
Count: 10
Extent:

XMin: -170319.814132028
YMin: 6549968.71982679
XMax: -119917.010397338
YMax: 6579475.64417881
Spatial Reference: 102100 (3857)

Layer: Post code sector (ID:3)
Count: 12
Extent:

XMin: -176646.172899436
YMin: 6546174.23717318
XMax: -118915.699144473
YMax: 6580468.9559943
Spatial Reference: 102100 (3857)