In order to compare with other sample sections, the 70th per- 

 centiles and 50th percentiles of absolute values of slope were plotted 

 infigure 5 for both the selected isotherm in the main thermocline and 

 the isotherm below the main thermocline. All of these angles, of 

 which half of the depth changes were greater and half less in absolute 

 values, are shown (fig. 5, bottom section) with reference to longitude. 



ISOTHERM BELOW MAIN THERMOCLINE 

 ISOTHERM IN MAIN THERMOCLINE 



SAN DIEGO 



158°W 



150"^ 



140° 

 LONGITUDE 



Figure 5. Summary of differences in depth of between half-minute or 304-foot-spaced 

 depth readings of isotherms between San Diego and Honolulu, 



Upper: Seventy percentile of absolute value of slope of an isotherm in the 



main thermocline and an isotherm below the main thermoci ine. 

 Lower: Fifty percentile of absolute value of slope of an isotherm in the 

 main thermoci ine and an isotherm below the main thermocline. 



15 



