Survey name | Type | Altitude | Spacing | Flight line distance |
---|---|---|---|---|
Ashland | M/R-D | 121.9 m | 4.80 km | 3,162 km |
Duluth | M/R-D | 121.9 m | 9.60 km | 2,259 km |
Pine | M-A | 304.8 m above ground | 1.60 km | 692 km |
Northeastern surveys | M-D | 150 m above ground | 0.40 km | 100,000 km |
Northwest Wisconsin | M-D | 91 m above ground | 0.80 km | 6,316 km |
West Wisconsin '96 | M-D | 152.4 m above ground | 0.80 km | 6,759 km |