CORRECTIONS OF SONIC DEPTHS ON ACCOUNT OF ERRORS IN TIMING 



59 



Table 4. Comparison between shotgun soundings and soundings by wire or 

 unprotected thermometers 



0.947 



0.911 

 0.983 



1.000 

 0.991 



Average 



0.960 ±0.006 



^Merriam Ridge 



Note .--Omitting station 67, we have the following average ratios of depths: wire to 

 shotgun, 0.958; wire and thermometer where available, to shotgun, 0.957; thermometer 

 to shotgun, 0.969; wire to shotgun at stations where thermometer depths are available, 

 0.973. 



