The STARS dive table is created on the assumption that the ascent rate is 10m / min.
When using this dive table, it is important to keep the ascent rate as close as 10m / min. Neither fast nor slower than that rate is appropriate for the release of absorbed nitrogen in the body.

By the way, since most diving is performed at points where the water depth changes, it is common to slowly surface while enjoying underwater following the water depth changes.
At these points, maintaining a 10m ascent rate is not practical.

Also, as you can see in the example dive profile, all dive tables are designed for diving at specific depths.

Therefore, in the case of diving that does not stay at a certain depth such as leisure diving, there is a large gap between the actual nitrogen accumulation amount and the nitrogen accumulation amount indicated by the dive table.
Furthermore, when performing repetitive diving, there will be a considerable difference between the actual amount accumulated and the amount accumulated in the dive table.

Using the dive table in the example given on the previous page, this gap is quite safe for divers, but in some cases you will not be able to repeat dive while facing the beautiful sea.