Layer Estimates:

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

XMin: -17811118.5269238
YMin: -15538711.0963092
XMax: 17811118.5269238
YMax: 15538711.0963092
Spatial Reference: 102100 (3857)

Layer: Tracks (ID:1)
Count: 12
Extent:

XMin: -17811118.5269238
YMin: -15538711.0963092
XMax: 17811118.5269238
YMax: 15538711.0963092
Spatial Reference: 102100 (3857)