Layer Estimates:

Layer: 1-month SPI (ID:0)
Count: 1305894
Extent:

XMin: -20037507.0672
YMin: -6446275.841
XMax: 20048003.6509
YMax: 6435201.5578
Spatial Reference: 102100 (3857)

Layer: 3-month SPI (ID:1)
Count: 1025815
Extent:

XMin: -20037507.0672
YMin: -6446275.841
XMax: 20048003.6509
YMax: 6435201.5578
Spatial Reference: 102100 (3857)

Layer: 6-month SPI (ID:2)
Count: 841630
Extent:

XMin: -20037507.0672
YMin: -6446275.841
XMax: 20048003.6509
YMax: 6435201.5578
Spatial Reference: 102100 (3857)

Layer: 9-month SPI (ID:3)
Count: 775436
Extent:

XMin: -20037507.0672
YMin: -6446275.841
XMax: 20048003.6509
YMax: 6435201.5578
Spatial Reference: 102100 (3857)

Layer: 12-month SPI (ID:4)
Count: 753087
Extent:

XMin: -20037507.0672
YMin: -6446275.841
XMax: 20048003.6509
YMax: 6435201.5578
Spatial Reference: 102100 (3857)