Depth:Time spent at this depth%
0 - 5 Meter: 3:13 55%
5 - 10 Meter: 1:16 22%
10 - 15 Meter: 1:00 17%
15 - 20 Meter: 0:08 2%
20 - 25 Meter: 0:04 1%
25 - 30 Meter: 0:08 2%

Change bucket size to:
Time spent at depth