Description of logs: Logs were kept for each CTD/AC3 cast from 1990 to 1999. The logs include cast number, time of cast (PST), and approximate depth (m). In addition, for "pump casts" when water samples were taken at bottom, middle, and surface depths, the times at which the pumps were taken was recorded. Finally, additional notes were taken by the technician responsible for the CTD/AC3 casts which may provide useful in any data analysis. Size of files: CTD/AC3 log files are too large to post on the website. In order to obtain access to the log files, please contact: Sarah Butler CRETM Data Manager PO Box 352182 University of Washington Seattle, WA 98195 sbutler@u.washington.edu