Layer Estimates:

Layer: Bridges (ID:0)
Count: 106
Extent:

XMin: -8908663.8892
YMin: 4923500.3687
XMax: -8895796.0203
YMax: 4937954.2477
Spatial Reference: 102100 (3857)

Layer: Colleges/Universities (ID:1)
Count: 15
Extent:

XMin: -8913536.8481
YMin: 4929743.1385
XMax: -8897121.3986
YMax: 4945662.0452
Spatial Reference: 102100 (3857)

Layer: Hospitals (ID:2)
Count: 15
Extent:

XMin: -8913536.8481
YMin: 4929743.1385
XMax: -8897121.3986
YMax: 4945662.0452
Spatial Reference: 102100 (3857)

Layer: Pittsburgh (ID:4)
Count: 1
Extent:

XMin: -8916171.4745
YMin: 4918631.8006
XMax: -8890614.642
YMax: 4939017.4686
Spatial Reference: 102100 (3857)

Layer: Three City Centers (ID:3)
Count: 4
Extent:

XMin: -8916172.1141
YMin: 4918630.5075
XMax: -8890617.1646
YMax: 4939010.5849
Spatial Reference: 102100 (3857)

Layer: Rivers (ID:5)
Count: 10
Extent:

XMin: -8911485.5637
YMin: 4923555.4324
XMax: -8892630.1047
YMax: 4938027.7312
Spatial Reference: 102100 (3857)

Layer: Employees Walking to Work (ID:6)
Count: 358
Extent:

XMin: -8916191.6495
YMin: 4918625.1803
XMax: -8890619.8848
YMax: 4939022.1567
Spatial Reference: 102100 (3857)