Layer Estimates:

Layer: Preterm Birth Proportion 2000-2009 (ID:0)
Count: 95
Extent:

XMin: -13885188.416121
YMin: 2870387.40129598
XMax: -7454985.15044966
YMax: 6338173.22428954
Spatial Reference: 102100 (3857)

Layer: Alaska, Hawaii, Puerto Rico (ID:1)
Count: 3
Extent:

XMin: -19951916.4837268
YMin: 2017836.74666266
XMax: 20021886.7291929
YMax: 11554352.6208824
Spatial Reference: 102100 (3857)