Layer Estimates:

Layer: PittsburghBlkGrps (ID:0)
Count: 463
Extent:

XMin: -8916661.8216425
YMin: 4917608.82079858
XMax: -8889222.25557814
YMax: 4939773.08885193
Spatial Reference: 102100 (3857)

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

XMin: -8916333.38723451
YMin: 4918105.73637916
XMax: -8890289.03904046
YMax: 4939415.38831712
Spatial Reference: 102100 (3857)

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

XMin: -8911501.16393846
YMin: 4923549.04742521
XMax: -8892676.48141497
YMax: 4938026.56337135
Spatial Reference: 102100 (3857)

Layer: PittsburghBlkGrps_Statistics (ID:3)
Count: 1