Layer Estimates:

Layer: ACSsampleSize (ID:0)
Count: 3233
Extent:

XMin: -19942592.3656
YMin: -1637685.5676
XMax: 20012846.0377
YMax: 11523911.9693
Spatial Reference: 102100 (3857)

Layer: CountySample2015.csv (ID:1)
Count: 3142