Min Deco for 30/30

[PfcAJ]

From MultiDeco:

Decompression model: ZHL16-C + GF

DIVE PLAN
Surface interval = 5 day 0 hr 0 min.
Elevation = 0ft
Conservatism = GF 40/85

Dec to 80ft (1) Nitrox 30 60ft/min descent.
Level 80ft 238:40 (240) Nitrox 30 1.03 ppO2, 67ft ead
Asc to 40ft (241) Nitrox 30 -30ft/min ascent.
Stop at 40ft 0:40 (242) Nitrox 30 0.66 ppO2, 32ft ead
Stop at 30ft 27:00 (269) Nitrox 30 0.57 ppO2, 23ft ead
Stop at 20ft 58:00 (327) Oxygen 1.60 ppO2, 0ft ead
Surface (333) Oxygen -3ft/min ascent.


Decompression model: ZHL16-C + GF

DIVE PLAN
Surface interval = 5 day 0 hr 0 min.
Elevation = 0ft
Conservatism = GF 40/85

Dec to 80ft (1) Nitrox 32 60ft/min descent.
Level 80ft 238:40 (240) Nitrox 32 1.09 ppO2, 64ft ead
Asc to 40ft (241) Nitrox 32 -30ft/min ascent.
Stop at 40ft 0:40 (242) Nitrox 32 0.71 ppO2, 30ft ead
Stop at 30ft 19:00 (261) Nitrox 32 0.61 ppO2, 21ft ead
Stop at 20ft 53:00 (314) Oxygen 1.60 ppO2, 0ft ead
Surface (320) Oxygen -3ft/min ascent.

Hmm, curious.

Depth Time O2 He
80 240 32 0
40 2 32 0
30 22 32 0
20 48 100 0

Depth Time O2 He
80 240 30 0
40 1 30 0
30 22 30 0
20 55 100 0

 

[sea_otter]

Hmm, curious.

Depth Time O2 He
80 240 32 0
40 2 32 0
30 22 32 0
20 48 100 0

Depth Time O2 He
80 240 30 0
40 1 30 0
30 22 30 0
20 55 100 0

Actually if I set MultiDeco to ZHL16-B instead of C, it matches your numbers pretty closely (mine gives one extra minute on O2).