Layer Estimates:

Layer: world30 (ID:0)
Count: 73
Extent:

XMin: -20037507.8427882
YMin: -30240971.4583861
XMax: 20037507.8427882
YMax: 30240971.4583861
Spatial Reference: 102100 (3857)

Layer: ne_10m_graticules_5 (ID:1)
Count: 107
Extent:

XMin: -20037507.0671618
YMin: -30240971.9583861
XMax: 20037507.0671618
YMax: 30240971.9583861
Spatial Reference: 102100 (3857)

Layer: countries (ID:2)
Count: 256
Extent:

XMin: -20037507.0672
YMin: -30181485.2383
XMax: 20037507.0672
YMax: 18418386.3091
Spatial Reference: 102100 (3857)