Layer Estimates:

Layer: centerofall (ID:0)
Count: 21
Extent:

XMin: -19234853.1806735
YMin: -1563972.23187825
XMax: -19098198.152988
YMax: -1510957.41661684
Spatial Reference: 102100 (3857)

Layer: markerofall (ID:1)
Count: 31
Extent:

XMin: -19236353.0601401
YMin: -1578742.45784768
XMax: -19098050.0787236
YMax: -1510374.44174072
Spatial Reference: 102100 (3857)