What should divers consider when planning ascents using decompression tables?

When planning ascents using decompression tables, it is crucial for divers to consider both the elapsed dive time and ascent rates. Decompression tables are designed to help divers safely return to the surface after spending time at varying depths underwater. The elapsed dive time directly affects the amount of nitrogen absorbed by the body during the dive, which in turn influences the necessary decompression stops and the duration of those stops.

Ascent rates are equally important, as a controlled ascent rate can help prevent the formation of nitrogen bubbles in the blood, which can lead to decompression sickness. Following the recommended ascent rates allows divers to safely off-gas nitrogen and minimizes the risk of injury. Therefore, considering both how long a diver has been underwater and the rate at which they ascend is essential in ensuring a safe return to the surface.