Layer Estimates:

Layer: Contour Lines (ID:0)
Count: 72404
Extent:

XMin: -8894034.63633304
YMin: 5403053.05984646
XMax: -8863416.86810149
YMax: 5442927.89439573
Spatial Reference: 102100 (3857)
Vertical Spatial Reference: 5713 (5713)