Repetitive Dive Letter Group
Table 3, repetitive dive times
Table 3: Repetitive Dive Time
Determining Repetitive Dive Letter Group
Now that you know how to calculate total nitrogen times, you're ready to determine letter groups following a repetitive dive.

To find your letter group you return to Table 1, since this is the only table that provides end-of-dive letter groups. But instead of using your actual dive time, you use your total nitrogen time. Let's look at an example.