Layer Estimates:

Layer: Crimes Within a Half Mile of Johns Hopkins University (ID:0)
Count: 15180
Extent:

XMin: -8530913.51719712
YMin: 4766519.49547731
XMax: -8527807.70340399
YMax: 4770951.93894637
Spatial Reference: 102100 (3857)

Layer: Basemap_Structures_MeanCenter (ID:1)
Count: 1
Extent:

XMin: -8529424.3528
YMin: 4768415.887
XMax: -8529424.3528
YMax: 4768415.887
Spatial Reference: 102100 (3857)

Layer: Crimes (ID:2)
Count: 328160
Extent:

XMin: -9075789.02878295
YMin: 4519883.37537963
XMax: -8502938.92916077
YMax: 4816844.70137393
Spatial Reference: 102100 (3857)

Layer: Part_1_Crime_data (ID:3)
Count: 328706