WWVH 
Firing Timer 
Closest Jug 
50' 
100' 
150' 
200' 
250' 
Dead 
Dead 
. No Signal 
Dead 
Dead 
No Signal 
Dial Trace 
(overlain by dead trace) 
Dead Trace 
WWVH 
9.62 kin 
42603 
11.70 km 
42605 
18.9 km 
42904 
WWVH 
Fig. 4. Sample records taken in the refraction field effort. 
