Layer Estimates:

Layer: Chicago Robbery (ID:0)
Count: 646
Extent:

XMin: 340847.244018297
YMin: 553078.080245679
XMax: 365636.982595745
YMax: 594622.402818929
Spatial Reference: 26971 (26971)

Layer: Chicago Homicide (ID:1)
Count: 511
Extent:

XMin: 342917.449512409
YMin: 553980.899595948
XMax: 366915.925721218
YMax: 594749.199562596
Spatial Reference: 26971 (26971)

Layer: CrimeTractData (ID:2)
Count: 878
Extent:

XMin: 339058.444299999
YMin: 552872.482600003
XMax: 367358.2374
YMax: 595271.2906
Spatial Reference: 26971 (26971)