Layer Estimates:

Layer: MBTA Stations (ID:1)
Count: 7
Extent:

XMin: 231102.0044
YMin: 903074.670400001
XMax: 234818.367700003
YMax: 905518.369899999
Spatial Reference: 26986 (26986)

Layer: Subway Lines (ID:2)
Count: 8
Extent:

XMin: 230646.211400002
YMin: 902695.862
XMax: 235102.407499999
YMax: 905540.1404
Spatial Reference: 26986 (26986)

Layer: Somerville City Boundary (ID:3)
Count: 1
Extent:

XMin: 230083.61087948
YMin: 902536.31288207
XMax: 235201.450879481
YMax: 907576.88598207
Spatial Reference: 26986 (26986)