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OK, Miss, here it goes: 1. The mean between the two depths. Let's say your bottom depth is 190 ft and your first required stop is at 70 ft. Then your first deep stop is at 190 + 70 ------------- = 130 ft 2 So you stop at 130 ft for 2 minutes. The difference between 130 and 70 is 60, which is greater than 30 ft, so you make another deep stop at 130 + 70 ------------- = 100 ft 2 So you make another 2-minute stop at 100 ft. The difference between 100 and 70 is 30 ft, so there's no need for another stop. 2. The depth at which the ambient pressure is the mean between the depths. To be honest, if you're not comfortable with the procedure above, you shouldn't even think about doing this. In fact, Rich Pyle, the guy who came up with this stuff, recommends procedure # 1, because it's a lot easier, and there's no significant difference in the effects. Let's face it, our bodies are not mathematical entities. There's no point in going to the umpteenth decimal place. Dive safe, Carlos Accioly ---------- From: EanxMiss@ao*.co* Sent: Friday, September 26, 1997 8:28 PM To: carlos@me*.co*.br* Subject: Re: Deep stops <it's the mean between the two depths. If you didn't, it's the depth at which the ambient pressure is the mean between the depths..> Its has been awhile since I have had algebra, so can anyone tell me how to calculate the "mean depth" Thanks Leslie Herman -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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