Layer Estimates:

Layer: Metro Ground Surface Point 1-5 Metre - Vicmap Elevation (EL_GRND_SURFACE_POINT_1TO5M) (ID:0)
Count: 44216
Extent:

XMin: 2453960.5185
YMin: 2335405.5112
XMax: 2565037.8825
YMax: 2451691.5536
Spatial Reference: 7899 (7899)

Layer: Metro Contour 1-5 Metre - Vicmap Elevation (EL_CONTOUR_1TO5M) (ID:1)
Count: 1065266
Extent:

XMin: 2452017.8999
YMin: 2335323.8458
XMax: 2566130.0108
YMax: 2451771.7135
Spatial Reference: 7899 (7899)