Cruises are made to the HOT deep water station approximately once a month, and are denoted as HOT-n, where n is the sequential cruise number. HOT-1 was in October 1988.

Station inventories are given in files with the extension "sum" (e.g., HOT-1 is summarized in hot1.sum).

Station inventories from the ALOHA-Climax (AC) cruises are summarized in files with the prefix ac (e.g., AC-1 is summarized in ac1.sum).

These summary files are written using formats specified by the WOCE Hydrographic Programme Office, and are detailed in the WHP Office Report WHPO 90-1, available from Steve Diggs, WHPO Data Manager, Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093-0214.