Layer Estimates:

Layer: Pittsburgh Serious Crimes 2015 (Points) (ID:0)
Count: 912
Extent:

XMin: -8914775.77122244
YMin: 4921325.55682803
XMax: -8890547.27046787
YMax: 4938516.21068843
Spatial Reference: 102100 (3857)

Layer: Pittsburgh Serious Crimes 2015 (by tract) (ID:1)
Count: 402
Extent:

XMin: -8945731.8458179
YMin: 4894225.14950964
XMax: -8870912.65319466
YMax: 4964513.41979896
Spatial Reference: 102100 (3857)