Layer Estimates:

Layer: Parcels (ID:1)
Count: 13413
Extent:

XMin: -7918691.6715776
YMin: 5216949.34016512
XMax: -7911732.11690628
YMax: 5223826.11247061
Spatial Reference: 102100 (3857)

Layer: Zoning (ID:2)
Count: 1469
Extent:

XMin: -7918691.67160544
YMin: 5216949.34014094
XMax: -7911732.11693416
YMax: 5223826.11244639
Spatial Reference: 102100 (3857)

Layer: MBTA Stops (ID:3)
Count: 170
Extent:

XMin: -7931854.19447694
YMin: 5192114.09440535
XMax: -7902721.62716657
YMax: 5226824.19885163
Spatial Reference: 102100 (3857)

Layer: MBTA Lines (ID:4)
Count: 141
Extent:

XMin: -7931854.19447733
YMin: 5192113.92219269
XMax: -7902691.32093379
YMax: 5227052.06417982
Spatial Reference: 102100 (3857)

Layer: Somerville City Limits (ID:5)
Count: 1
Extent:

XMin: -7918691.67295584
YMin: 5216949.34041903
XMax: -7911732.11828738
YMax: 5223826.11231645
Spatial Reference: 102100 (3857)

Layer: Somerville Block Groups (ID:6)
Count: 83
Extent:

XMin: -7918691.67336132
YMin: 5216949.34041903
XMax: -7911732.118638
YMax: 5223826.04213546
Spatial Reference: 102100 (3857)

Layer: Somerville Neighborhoods (ID:7)
Count: 19
Extent:

XMin: -7918691.67160544
YMin: 5216949.34014094
XMax: -7911732.13862768
YMax: 5223821.77021308
Spatial Reference: 102100 (3857)