reversing thermometers or interpolated from L-Z 

 curves based on thermometer performance and 

 wire angle. Procedures used for these determina- 

 tions were essentially those specified by LaFond 

 (1951). STD sampling depths were determined 

 by pressure sensors and read from an analog 

 trace. 



All oceanographic and nieteorlogical data ac- 

 quired were quality-controlled at Coast Guard 

 Oceanographic Unit (CGOU), then submitted to 

 the National Oceanographic Data Center 

 (NODC) for further processing and data listings 

 (reprinted in Appendix A). The NODC output, in 

 punched card format, was used to construct ver- 

 tical sections of temperature, salinity, and 

 sigma-t with an incremental plotter using a com- 

 puter program developed by Richard F. 



Johnson. The resulting sections were quality- 

 controlled and smoothed by hand to yield plates 

 of publication quality. The final form of the tem- 

 perature, salinity and density sections are in- 

 cluded in this report (figs. 2-.58). 



Further details concerning the techniques 

 used to acquire and process these data can be 

 obtained from CGOU. 



CRUISE NARRATIVES 



During the period 1967-69, a total of 19 oc- 

 cupations of A5, A6, and AT were completed. Of 

 these, six were on A5, nine on A6, and four on 



A7. 



Table 1. Oceanographic Cruises on Standard Monitoring Sections A5, A6, and A7 during 1967-69. 



*The A in the cruise number indicates that the standard section is in the Atlantic. The first number is the standard section number and the number after the 



hyphen is the serial number of the section occupation. 



