Layer Estimates:

Layer: ZIPCode (ID:0)
Count: 45
Extent:

XMin: -10100863.4318297
YMin: 4634283.30323959
XMax: -10031771.9093848
YMax: 4706197.4695694
Spatial Reference: 102100 (3857)

Layer: Census_Tract (ID:1)
Count: 199
Extent:

XMin: -10100900.8840038
YMin: 4634354.18255167
XMax: -10031807.2987266
YMax: 4706118.33775004
Spatial Reference: 102100 (3857)

Layer: Asthma_ED (ID:2)
Count: 199