Layer Estimates:

Layer: Markers1km (ID:0)
Count: 20766
Extent:

XMin: -15445724.6746
YMin: 5329413.502
XMax: -5868069.2211
YMax: 10893478.2381
Spatial Reference: 102100 (3857)

Layer: Segments1km (ID:1)
Count: 20763
Extent:

XMin: -15445730.0853
YMin: 5329411.261
XMax: -5868069.2211
YMax: 10893478.2381
Spatial Reference: 102100 (3857)