Layer Estimates:

Layer: San Francisco boundary line (ID:0)
Count: 4
Extent:

XMin: -13638300.6509
YMin: 4538276.8584
XMax: -13620723.8576
YMax: 4552843.592
Spatial Reference: 102100 (3857)

Layer: Study Area (ID:1)
Count: 370
Extent:

XMin: -13639887.9546
YMin: 4523642.4881
XMax: -13593744.572
YMax: 4563229.5505
Spatial Reference: 102100 (3857)

Layer: Pop2018.csv (ID:2)
Count: 716