Layer Estimates:

Layer: Boston_City_Center (ID:0)
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Extent:

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Spatial Reference: 102100 (3857)

Layer: Boston_City_Limits (ID:1)
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Extent:

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Spatial Reference: 102100 (3857)

Layer: Boston_Drive_Times_60_90_120m (ID:2)
Count: 3
Extent:

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Spatial Reference: 102100 (3857)

Layer: Boston_Drive_Times_60_90_120m_clip (ID:3)
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Extent:

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YMin: 5060108.2538444
XMax: -7787286.80237978
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Spatial Reference: 102100 (3857)

Layer: Boston_Drive_Times_15_30_45m (ID:4)
Count: 3
Extent:

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Spatial Reference: 102100 (3857)

Layer: Boston_Radius_Rings_15_30_45mi (ID:5)
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Extent:

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Spatial Reference: 102100 (3857)

Layer: USA_Major_Cities (ID:6)
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Extent:

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XMax: -7657735.81426088
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Spatial Reference: 102100 (3857)