CNS & OTU Exposure Planner
Build an ordered diving-day profile and track retained CNS percentage and cumulative pulmonary oxygen loading together.
Exposure profile
This marks segments above the selected PPO₂/MOD constraint. It does not change CNS or OTU calculations at the actual PPO₂.
Exposure
Segment 1
Allowed range: 0 to 100 m.
Allowed range: 1 to 100 %.
Allowed range: 1 to 720 min.
Segment result
- PPO₂
- 1.28 ATA
- Interval / retained CNS
- Start of profile
- CNS loading
- +13.44%
- OTU loading
- +36.2 OTU
Selected check 1.4 ATA · MOD 33.8 m
0.00% retained · no prior CNS
13.44% retained after segment · 186.0 min is 100% at this PPO₂
36.2 OTU day total · unchanged by surface time
Exposure
Segment 2
Allowed range: 0 to 1440 min.
Enter 0 for another segment in the same dive. Surface time reduces retained CNS; this single-day model keeps accumulated OTU unchanged.
Allowed range: 0 to 100 m.
Allowed range: 1 to 100 %.
Allowed range: 1 to 720 min.
Segment result
- PPO₂
- 1.28 ATA
- Interval / retained CNS
- 90 min before segment
- CNS loading
- +13.44%
- OTU loading
- +36.2 OTU
Selected check 1.4 ATA · MOD 33.8 m
6.72% retained · 6.72% recovered
20.16% retained after segment · 186.0 min is 100% at this PPO₂
72.4 OTU day total · unchanged by surface time