Layer Estimates:

Layer: EXTPost2010_Sites (ID:0)
Count: 31251
Extent:

XMin: 549109.6764
YMin: 856896.2136
XMax: 668202.1288
YMax: 959346.620700002
Spatial Reference: 2157 (2157)

Layer: EXT05To09_Sites (ID:1)
Count: 32261
Extent:

XMin: 549183.7435
YMin: 856890.795600001
XMax: 668000.0026
YMax: 959862.4395
Spatial Reference: 2157 (2157)

Layer: EXT00To05Sites (ID:2)
Count: 30965
Extent:

XMin: 549232.1988
YMin: 856776.636499999
XMax: 668186.731
YMax: 959386.1164
Spatial Reference: 2157 (2157)

Layer: EXTPre2000_Sites (ID:3)
Count: 20200
Extent:

XMin: 549276.7679
YMin: 856776.6291
XMax: 668160.665
YMax: 959379.4979
Spatial Reference: 2157 (2157)