Layer Estimates:

Layer: Bluesky 2km Map Sheets (ID:0)
Count: 1445
Extent:

XMin: -933141.58553008
YMin: 6768044.7361585
XMax: -756261.870480712
YMax: 6883265.01119796
Spatial Reference: 102100 (3857)

Layer: OSi 1000 Map Sheets (ID:1)
Count: 60
Extent:

XMin: -884161.229835622
YMin: 6789978.96422225
XMax: -787358.60624227
YMax: 6865964.57017299
Spatial Reference: 102100 (3857)

Layer: OSi 2500 Map Sheets (ID:2)
Count: 212
Extent:

XMin: -903715.118790789
YMin: 6787947.09649471
XMax: -769676.078376478
YMax: 6866967.64509187
Spatial Reference: 102100 (3857)

Layer: OSi 5000 Map Sheets (ID:3)
Count: 167
Extent:

XMin: -910254.196333184
YMin: 6788141.37304823
XMax: -772944.440359285
YMax: 6864528.98140639
Spatial Reference: 102100 (3857)