Calculating Average Depth?

FLDVR · December 29th, 2005, 05:10 PM

I see references to Average depth in calculations but I do not see how they arrived at the Average depth. Is it a calculation or just half of the Max depth?
Henry

PS Thanks for all replies on Finning- Practice does make it come together...

Chris B · December 29th, 2005, 06:01 PM

Quote: (Originally Posted by FLDVR)

I see references to Average depth in calculations but I do not see how they arrived at the Average depth. Is it a calculation or just half of the Max depth?
Henry

Don't know about anyone else but I just guesstimate the average depth, when surfacing I often check on the PC and it is always within 0-3m which in deco terms is neither here or there.

If we monitor the usual time, depth, gas....etc every few mins then it is pretty easy.

Chris B

Leigh u · December 29th, 2005, 06:17 PM

Basic Average = Add up the number of values. Then divide by that number of values to get your average.

Record depth at pre determined intervals, add up results and divide by the number of intervals.

5 minutes 150 feet
10 minutes 165 feet
15 minutes 155 feet
20 minutes 150 feet

620 / 4 = 155 feet

rough but useful. This helps give you a good mental log at key points in the dive.

Meng_Tze · December 30th, 2005, 06:24 AM

Jeeez Chris B, WTF is that avatar? Got enough gas there? Need a prop?:D

clarktenk · December 30th, 2005, 09:51 AM

I love his avatar, I saw it in I believe it was frogkick's DIR vs DIW ad believe me the DIW was absolutely hilarious. Hmmm lets see if I clip a lamn chair off to my helmet I can tie it to the line and maintain my deco stops. LMAO. :D

Oh as for average depth we pretty much estimate it. My computer takes 60 sec samples and I use that to figure out my average depth during the dive

FLDVR · December 31st, 2005, 04:13 AM

Thanks for the info.
I was reading far more into the av. depth than needed obviously.
Henry

December 29th, 2005, 05:10 PM	#1 (permalink)
FLDVR(Offline) New Member Join Date: Dec 2005 Location: Wellington, FL (WPB) Posts: 15	Calculating Average Depth? I see references to Average depth in calculations but I do not see how they arrived at the Average depth. Is it a calculation or just half of the Max depth? Henry PS Thanks for all replies on Finning- Practice does make it come together...

December 29th, 2005, 06:01 PM	#2 (permalink)
Chris B (Online) Chris B Join Date: Nov 2005 Location: NW UK Posts: 230	Quote: (Originally Posted by FLDVR) I see references to Average depth in calculations but I do not see how they arrived at the Average depth. Is it a calculation or just half of the Max depth? Henry Don't know about anyone else but I just guesstimate the average depth, when surfacing I often check on the PC and it is always within 0-3m which in deco terms is neither here or there. If we monitor the usual time, depth, gas....etc every few mins then it is pretty easy. Chris B __________________ www.merseydivers.com www.boardmanbikes.com

December 30th, 2005, 06:24 AM	#4 (permalink)
Meng_Tze(Offline) New Member Join Date: Nov 2005 Location: UK, SG, USA Posts: 91	Jeeez Chris B, WTF is that avatar? Got enough gas there? Need a prop?:D __________________ ____________________ Homo Bonae Voluntatis

December 31st, 2005, 04:13 AM	#6 (permalink)
FLDVR(Offline) New Member Join Date: Dec 2005 Location: Wellington, FL (WPB) Posts: 15	Average Depth Thanks for the info. I was reading far more into the av. depth than needed obviously. Henry

December 29th, 2005, 06:17 PM	#3 (permalink)
Leigh u(Offline) We Go Down Join Date: Nov 2005 Location: Ottawa Canada Posts: 227	Basic Average = Add up the number of values. Then divide by that number of values to get your average. Record depth at pre determined intervals, add up results and divide by the number of intervals. 5 minutes 150 feet 10 minutes 165 feet 15 minutes 155 feet 20 minutes 150 feet 620 / 4 = 155 feet rough but useful. This helps give you a good mental log at key points in the dive.

December 30th, 2005, 09:51 AM	#5 (permalink)
clarktenk(Offline) New Member Join Date: Dec 2005 Location: London, Ontario Canada Posts: 36	I love his avatar, I saw it in I believe it was frogkick's DIR vs DIW ad believe me the DIW was absolutely hilarious. Hmmm lets see if I clip a lamn chair off to my helmet I can tie it to the line and maintain my deco stops. LMAO. :D Oh as for average depth we pretty much estimate it. My computer takes 60 sec samples and I use that to figure out my average depth during the dive