Layer Estimates:

Layer: CityBoundary (ID:0)
Count: 1
Extent:

XMin: 739715.262297109
YMin: 2908293.89594018
XMax: 812255.080799863
YMax: 2970085.92524302
Spatial Reference: 102686 (2249)

Layer: Subway Lines (ID:2)
Count: 136
Extent:

XMin: 723068.478285953
YMin: 2901047.24093151
XMax: 793541.430106103
YMax: 2984749.43832721
Spatial Reference: 102686 (2249)

Layer: MBTA Commuter Rail Lines (ID:4)
Count: 19
Extent:

XMin: 562193.80868101
YMin: 2636668.12133825
XMax: 995681.243541658
YMax: 3131027.40755208
Spatial Reference: 102686 (2249)

Layer: Major Routes, by Administrative Type (ID:5)
Count: 36
Extent:

XMin: 139287.35036175
YMin: 2663072.71583868
XMax: 1078132.78598734
YMax: 3146837.43039426
Spatial Reference: 102686 (2249)

Layer: MassTowns_Basic (ID:6)
Count: 351
Extent:

XMin: 111093.162655751
YMin: 2550894.86867249
XMax: 1085450.89142984
YMax: 3148771.39502991
Spatial Reference: 102686 (2249)

Layer: Residents Working in Boston (ID:7)
Count: 4979
Extent:

XMin: 81050.8392917068
YMin: 2496255.99024327
XMax: 1208883.43836465
YMax: 3303264.69553378
Spatial Reference: 102686 (2249)

Layer: masscities_to_boston (ID:8)
Count: 350

Layer: allblocks_to_boston (ID:9)
Count: 63664

Layer: blkgrps_to_boston (ID:10)
Count: 5010