Layer Estimates:

Layer: ZHF (ID:0)
Count: 120
Extent:

XMin: -8247567.64745376
YMin: 521023.534098608
XMax: -8246102.25767593
YMax: 522462.826489455
Spatial Reference: 102100 (3857)

Layer: ZHF_ZHG (ID:1)
Count: 121
Extent:

XMin: -8247567.64752665
YMin: 521023.534098608
XMax: -8246102.25767593
YMax: 522464.259497852
Spatial Reference: 102100 (3857)