The decompression tables of the Buhlmann algorithm allow divers to plan the depth and duration of their dives, as the tables measure the way in which inert gases such as nitrogen and helium enter and leave the human body.
Versions are used to create Buhlmann decompression tables and in personal dive computers to compute no-decompression limits and decompression schedules for dives in real-time. The Buhlmann decompression algorithm is a mathematical model (algorithm) of the way in which inert gases enter and leave the human body as the ambient pressure changes. These decompression tables allow divers to plan the depth and duration for dives and the required decompression stops. 
