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Dear Tekkies,
Here I have a question for Dr. X's users:
The following are 3 Dr.X Tables calculated for the same depth 160
msw/525fsw. and same gas.
The only difference is the Bottom Time,
if you dive 2 min your RunTime will be 167 minutes ( and deep stops with
Trimix!?);
if you dive BT 3 min, RT =160! (7 minutes less deco with 1 min more bottome
time?);
if you dive BT 4 min, RT =163!(4 minutes less deco with 2 min more bottome
time?)
We have tried the same profile with other PC, and got the same results.
Maybe is related to the metric version, I don't know with the imperial
version.
For the Mac user, it runs well with SoftPc, but same results.
What have I done wrong? What do you think?
============================================================================
Estimated decompression for 2 min. BT @ 160 msw
for bottom mix of 55.7% HE, 35.0% N2, 9.3% O2:
Copyright 1993 by Sheck Exley, Rt. 8, Box 394, Live Oak, FL 32060
904-362-7589 Licensed to Mr. X Version 5.03
The amount of narcosis (END) at 160 msw is: 65 msw./213 fsw
WARNING! The bottom mix is hypoxic above 7 msw. /20fsw
Decompression from 66 msw/216 fsw up is on air, except that:
decompression from 40 msw/131 fsw to 9 msw/30fsw is on NTX32.0.
decompression from 6 msw/20 fsw up is on pure O2.
Surface breathing rates are: swimming = 20 L per min.
decompression = 18 L per min.
Descent rate should not exceed 30 msw/99 fsw per min.
Ascend at 10 msw/33 fsw per min. to first stop.
Travel time between stops at 10 msw per min. is included in the next stop
time.
Deco safety factor is 20% (adjusted Buhlmann time is 2.0 min.).
-------------------------------------------------------------------------------
stop time runtime deco mix| volume CNS% pO2 otu total
-------------------------------------------------------------------------------
0 msw = - 0 min. - | - 0.21 0 0
160 msw = 2 min. 2 min. HE55/N35| 541 L 4 1.60 5 5
Ascent = 9 min. 11 min. HE55/N35| 3402 L 4 1.18 13 18
72 msw = 3 min. 14 min. HE55/N35| 686 L 1 0.77 3 21
69 msw = 1 min. 15 min. HE55/N35| 221 L 0 0.74 1 22
54 msw = 3 min. 18 min. AIR | 535 L 2 1.36 6 28
45 msw = 2 min. 20 min. AIR | 306 L 1 1.16 4 32
42 msw = 2 min. 22 min. AIR | 289 L 1 1.10 3 35
39 msw = 1 min. 23 min. NTX32.0 | 136 L 2 1.58 3 38
36 msw = 2 min. 25 min. NTX32.0 | 255 L 2 1.48 5 43
33 msw = 1 min. 26 min. NTX32.0 | 119 L 1 1.39 3 46
30 msw = 3 min. 29 min. NTX32.0 | 334 L 2 1.29 5 51
27 msw = 3 min. 32 min. NTX32.0 | 309 L 1 1.19 5 56
24 msw = 4 min. 36 min. NTX32.0 | 380 L 2 1.10 6 62
21 msw = 5 min. 41 min. NTX32.0 | 431 L 2 1.00 6 68
18 msw = 7 min. 48 min. NTX32.0 | 544 L 2 0.90 7 75
15 msw = 8 min. 56 min. NTX32.0 | 555 L 2 0.80 6 81
12 msw = 14 min. 70 min. NTX32.0 | 856 L 2 0.71 8 89
9 msw = 17 min. 87 min. NTX32.0 | 895 L 2 0.61 5 94
6 msw = 19 min. 106 min. PURE O2 | 844 L 42 1.59* 38 132
3 msw = 61 min. 167 min. PURE O2 | 2195 L 34 1.29 91 223
Total stops: 156 min. | 9890 L
-------------------------------------------------------------------------------
Total dive: 167 min. 167 min. | 13833 L 109% 223
A 1 minute emergency ascent to 128 msw from 160 msw is possible.
* There is a high risk of CNS O2 toxicity where the pO2 is marked with *.
Total volumes for decompression: mix: 907 L, air: 1130 L, O2: 3040 L
NTX32.0: 4813 L,
============================================================================
Estimated decompression for 3 min. BT @ 160 msw
for bottom mix of 55.7% HE, 35.0% N2, 9.3% O2:
-------------------------------------------------------------------------------
stop time runtime deco mix| volume CNS% pO2 otu total
-------------------------------------------------------------------------------
0 msw = - 0 min. - | - 0.21 0 0
160 msw = 3 min. 3 min. HE55/N35| 810 L 7 1.60 7 7
Ascent = 11 min. 14 min. HE55/N35| 3861 L 5 1.10 14 21
54 msw = 6 min. 20 min. AIR | 1071 L 4 1.36 11 32
51 msw = 1 min. 21 min. AIR | 170 L 1 1.29 2 34
48 msw = 1 min. 22 min. AIR | 161 L 0 1.23 2 36
45 msw = 1 min. 23 min. AIR | 153 L 0 1.16 2 38
42 msw = 1 min. 24 min. AIR | 144 L 0 1.10 2 40
39 msw = 1 min. 25 min. NTX32.0 | 136 L 2 1.58 3 43
36 msw = 1 min. 26 min. NTX32.0 | 127 L 1 1.48 3 46
33 msw = 2 min. 28 min. NTX32.0 | 241 L 1 1.39 4 50
30 msw = 2 min. 30 min. NTX32.0 | 224 L 1 1.29 4 54
27 msw = 4 min. 34 min. NTX32.0 | 411 L 2 1.19 6 60
24 msw = 3 min. 37 min. NTX32.0 | 283 L 1 1.10 4 64
21 msw = 5 min. 42 min. NTX32.0 | 431 L 2 1.00 6 70
18 msw = 6 min. 48 min. NTX32.0 | 467 L 2 0.90 6 76
15 msw = 8 min. 56 min. NTX32.0 | 555 L 2 0.80 6 82
12 msw = 13 min. 69 min. NTX32.0 | 793 L 2 0.71 7 89
9 msw = 17 min. 86 min. NTX32.0 | 895 L 2 0.61 5 94
6 msw = 17 min. 103 min. PURE O2 | 754 L 38 1.59* 34 128
3 msw = 57 min. 160 min. PURE O2 | 2051 L 32 1.29 85 213
Total stops: 146 min. | 9067 L
-------------------------------------------------------------------------------
Total dive: 160 min. 160 min. | 13738 L 105% 213
A 1 minute emergency ascent to 128 msw from 160 msw is possible.
* There is a high risk of CNS O2 toxicity where the pO2 is marked with *.
Total volumes for decompression: air: 1700 L, O2: 2805 L
NTX32.0: 4564 L,
============================================================================
Estimated decompression for 4 min. BT @ 160 msw
for bottom mix of 55.7% HE, 35.0% N2, 9.3% O2:
Deco safety factor is 20% (adjusted Buhlmann time is 4.1 min.).
-------------------------------------------------------------------------------
stop time runtime deco mix| volume CNS% pO2 otu total
-------------------------------------------------------------------------------
0 msw = - 0 min. - | - 0.21 0 0
160 msw = 4 min. 4 min. HE55/N35| 1079 L 9 1.60 9 9
Ascent = 11 min. 15 min. HE55/N35| 3861 L 5 1.10 14 23
54 msw = 6 min. 21 min. AIR | 1071 L 4 1.36 11 34
51 msw = 1 min. 22 min. AIR | 170 L 1 1.29 2 36
48 msw = 1 min. 23 min. AIR | 161 L 0 1.23 2 38
45 msw = 1 min. 24 min. AIR | 153 L 0 1.16 2 40
42 msw = 1 min. 25 min. AIR | 144 L 0 1.10 2 42
39 msw = 1 min. 26 min. NTX32.0 | 136 L 2 1.58 3 45
36 msw = 2 min. 28 min. NTX32.0 | 255 L 2 1.48 5 50
33 msw = 1 min. 29 min. NTX32.0 | 119 L 1 1.39 3 53
30 msw = 3 min. 32 min. NTX32.0 | 334 L 2 1.29 5 58
27 msw = 3 min. 35 min. NTX32.0 | 309 L 1 1.19 5 63
24 msw = 3 min. 38 min. NTX32.0 | 283 L 1 1.10 4 67
21 msw = 5 min. 43 min. NTX32.0 | 431 L 2 1.00 6 73
18 msw = 7 min. 50 min. NTX32.0 | 544 L 2 0.90 7 80
15 msw = 8 min. 58 min. NTX32.0 | 555 L 2 0.80 6 86
12 msw = 13 min. 71 min. NTX32.0 | 793 L 2 0.71 7 93
9 msw = 17 min. 88 min. NTX32.0 | 895 L 2 0.61 5 98
6 msw = 17 min. 105 min. PURE O2 | 754 L 38 1.59* 34 132
3 msw = 58 min. 163 min. PURE O2 | 2088 L 32 1.29 87 219
Total stops: 148 min. | 9195 L
-------------------------------------------------------------------------------
Total dive: 163 min. 163 min. | 14135 L 108% 219
A 1 minute emergency ascent to 128 msw from 160 msw is possible.
.
Total volumes for decompression: air: 1700 L, O2: 2841 L NTX32.0: 4654 L,
Regards
Roberto
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