Survey name | Type | Altitude | Spacing | Flight line distance |
---|---|---|---|---|
San Francisco Bay | M-Dz | 304.8 m above ground | 1.60 km | 1,802 km |
San Francisco '73 | M-D | 914.4 m (barometer) | 1.60 km | 11,909 km |
San Francisco Bay '95 | M-D | 149.4 m above ground | 0.53 km | 5,310 km |
Coastal California N. | M-Dz | 914.4 m (barometer) | 1.60 km | 4,828 km |
San Francisco | M/R-D | 121.9 m | 4.80 km | 1,033 km |