The files prefixed by res are apparent resistivity plots with the nominal frequency as indicated. These are flat color maps (clr) generated with a pixel size of 20m and plot size of 1:48,000.
	
The projection for each file is NAD27 UTM zone 14N with x,y units in meters
The tfw extension indicates the world file georegistration. 	

FILE NAME			DESCRIPTION
flight_path_topo.tfw		
flight_path_topo.tif	flight path with topographic map background	
res115k_clr.tfw	
res115k_clr.tif		apparent resistivity (ohm meters) at 115,000 Hz
res1500_clr.tfw	
res1500_clr.tif		apparent resistivity (ohm meters) at 1500 Hz 
res25k_clr.tfw	
res25k_clr.tif		apparent resistivity (ohm meters) at 25,000 Hz	
res3300_clr.tfw	
res3300_clr.tif		apparent resistivity (ohm meters) at 33,000 Hz 
res400_clr.tfw
res400_clr.tif		apparent resistivity (ohm meters) at 400 Hz 
res6200_clr.tfw
res6200_clr.tif		apparent resistivity (ohm meters) at 6200 Hz