Layer Estimates:

Layer: Rock County (ID:0)
Count: 2570
Extent:

XMin: 474785.340630092
YMin: 312718.259098105
XMax: 510366.258313261
YMax: 329171.000142694
Spatial Reference: 103453 (8128)

Layer: Jefferson County (ID:1)
Count: 1801
Extent:

XMin: 495611.231839206
YMin: 328113.617683226
XMax: 554068.851286925
YMax: 382086.996491019
Spatial Reference: 103453 (8128)