The best I can come up with is a small scale graphic on page 11 of [/u]The Survival Book[u], authored by Paul Nesbitt, Alonzo Pond, and William Allen, 1959. The chart reflects February conditions, and indicates that the victims were in Area F, where the survival period is indefinite and excessive fatigue is the more likely cause of death. Per their map, if you fall overboard, best do it in the tropics, not on the west coast.