Layer Estimates:

Layer: Mailbox (ID:0)
Count: 90605
Extent:

XMin: -13595652.7316
YMin: 30.4483993892796
XMax: 15935473.000001
YMax: 9007959.000001
Spatial Reference: 102100 (3857)

Layer: Buildings_1 (ID:1)
Count: 51080
Extent:

XMin: -13595783.9545
YMin: 2274993.0357
XMax: 17935473.8924
YMax: 9667959.4638
Spatial Reference: 102100 (3857)