In Buzz Aldrin's Race into Space, what does the "endurance" stat do?

Every astonaut has a capsule piloting stat, which increases their chance of success during any capsule phase, a docking stat which increases their chances during any docking phase, a landing stat which increases their chances during any landing phase, and an EVA stat which increases their chances during EVA phases. But what does the endurance stat do?


Solution 1:

The manual for the game has been uploaded online and can be found here.

On page 13, it says:

ENDURANCE

This skill is added to the capsule safety factor during space duration attempts and lunar missions.