Lets do the math and look at the impirical evidence as best we can, without the credit given by a computer, or credit for the time spent above 20 ft, or for deep stops or safety stops.
Since I am familiar with the RDP and The Wheel, lets put 2 adjusted altitude multi-level dives together with similar profiles to Ron's 2 dives he did before driving to altitude yeasterday. Ron waited for 2 1/2 hours before driving. Lets see if that was safe.
Lets use 80 feet for 10 minutes, 50 feet for 20 minutes, and 35 feet for 20 minutes. The Blue Hole is at 4600 feet so the adjusted depths are for 5000 feet.
95 feet for 10 minutes is an E.
60 feet for 20 minutes is a P.
35 feet for 20 minutes is an S.
2 hour SI brings him to a B.
Second dive same profile results in an ending pressure group of W.
2 1/2 hour SI brings him back to B.
His computer along with the extended time above 20ffw would have him at pressure group A.
He gradually gains 2000 feet elevation culminating in the crossing of Raton Pass 3 hours or so later. Then in another 3 hours or so he drives up to a little over 8000 feet. His cumulative 3000 foot gain happens at least 6 hours after he departed Santa Rosa with a B pressure group.
The gradual 3000 foot gain is a lot different than flying after diving from sea level and going very quickly to a cabin pressure between 4000 and 8000 feet.
I'm not aware of scientific evidence that would suggest he is taking very little risk, but the simple math and the fact that we altitude divers all have safely conducted our routines in this manner for years, suggests that he/we are at low risk
Since I am familiar with the RDP and The Wheel, lets put 2 adjusted altitude multi-level dives together with similar profiles to Ron's 2 dives he did before driving to altitude yeasterday. Ron waited for 2 1/2 hours before driving. Lets see if that was safe.
Lets use 80 feet for 10 minutes, 50 feet for 20 minutes, and 35 feet for 20 minutes. The Blue Hole is at 4600 feet so the adjusted depths are for 5000 feet.
95 feet for 10 minutes is an E.
60 feet for 20 minutes is a P.
35 feet for 20 minutes is an S.
2 hour SI brings him to a B.
Second dive same profile results in an ending pressure group of W.
2 1/2 hour SI brings him back to B.
His computer along with the extended time above 20ffw would have him at pressure group A.
He gradually gains 2000 feet elevation culminating in the crossing of Raton Pass 3 hours or so later. Then in another 3 hours or so he drives up to a little over 8000 feet. His cumulative 3000 foot gain happens at least 6 hours after he departed Santa Rosa with a B pressure group.
The gradual 3000 foot gain is a lot different than flying after diving from sea level and going very quickly to a cabin pressure between 4000 and 8000 feet.
I'm not aware of scientific evidence that would suggest he is taking very little risk, but the simple math and the fact that we altitude divers all have safely conducted our routines in this manner for years, suggests that he/we are at low risk
