Layer Estimates:

Layer: Sheet1 (ID:0)
Count: 52
Extent:

XMin: -17687030.9813816
YMin: 2470336.5569742
XMax: -10990421.7602543
YMax: 3432820.83086341
Spatial Reference: 102100 (3857)

Layer: Review (ID:1)
Count: 7