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Intersting, is this rounding error as I notice the numbers only iverge by 1 minute at any one time. [\]Robert Wood The St. Lawrence River - fresh, warm, visible diving. -----Original Message----- From: CuteEve@ao*.co* [mailto:CuteEve@ao*.co*] Sent: Tuesday, February 26, 2002 2:35 PM To: techdiver@aquanaut.com Subject: RGBM GF or JF? I see so many questions, doubts, and comments on RGBM that I can't help putting a big grin on my face. Are we putting our lives on this so-proven model on mere faith? One instructor showed me a scary comparison made, not against other models, but on itself. Has anyone else compared the deco at different depth, same time or same depth different times? Well, this instructor did. On a mix 16/(20-40) % for a 20 minute dive: stop.......220 ft........200 ft 140 ft........1..............1 130...........1..............1 120...........1..............1 110...........1..............1 100...........2..............2 90............2...............2 80............2...............2 70............3...............4 60............4...............4 50............5...............6 40............7...............8 30...........10.............11 20............5...............6 10...........10.............10 total........54.............59min So similar deco profiles for both depths yield a longer deco for 200 ft than for 220 ft! Give me a break! I understand the "official" explanation for this difference was a higher degree of "conservatism" due to a higher hit frequency in the shallower depths......yeah, sure. The model is perfect; it's the divers fault they get bent! How much higher a conservatism? Why does it happen again with 170 ft and 190 ft where a 15 minute dive gives a 33 minute deco for 170 ft while only 29 minute deco on the deeper dive? More conservatism or a higher "Jeeezzzuz Factor" (JF)? How do you adjust the JF to dive 170 ft for 15 minutes and do a total 33 minute deco or rather dive it for 20 minutes because you only do 32 minutes deco? You mean a 5 minutes longer stay yields a shorter deco? Yep, it's right there in the Naui book, Tables pp 3, 4 and 5. See for yourself before you trust a model with your body. I have seen the outcome. Heck, I can develop my own deco model. I've got a dart board too! BTW Christina, the impropriety of using a government e-mail address for promoting, selling or private purposes is dealt at a different level. Not only is improper and unethical, but illegal. I can e-mail you privately on that if interested. That goes for the private commercial use of government facilities. But I bet you that at this time, "he is laughing all the way to the bank". What is a simple taxpayer supposed to do? QTV -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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