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Robert,<br>
<br>
It does help. Now, I understand.<br>
<br>
Thanks.<br>
<br>
<br>
<div class="moz-cite-prefix">On 12. 01. 15 10:57, Robert Helling
wrote:<br>
</div>
<blockquote
cite="mid:64929912-9704-4CA3-A985-1C7EF631E232@atdotde.de"
type="cite">
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Patrick,
<div class=""><br class="">
<div>
<blockquote type="cite" class="">
<div class="">On 12.01.2015, at 09:37, Patrick Valsecchi
<<a moz-do-not-send="true"
href="mailto:patrick@thus.ch" class="">patrick@thus.ch</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class=""><span class="">In the attached screenshot, you
can see where I had the mouse cursor with hand drawn
black cross. There, you can see clearly (with the green
and red areas) that the calculated ceiling was 12m and
the DC ceiling was 9m.</span><br class="">
<br class="">
<span class="">But if you look at the Information panel on
the right, it shows 2 min at 6m for the calculated deco
and 1min at 9m for the DC deco. The calculated ceiling
for the 5min tissue is 10m which is consitent with the
graph and a calculated ceiling of 12m.</span><br
class="">
<br class="">
<span class="">So why is the calculated Deco information
showing "2min @ 6m" when the calculated ceiling is 12m?</span></div>
</blockquote>
</div>
<div class=""><br class="">
</div>
these values are calculated in profile.c around line 860.</div>
<div class=""><br class="">
</div>
<div class="">I agree these data seem to be contradictory but in
fact they aren’t if you take into account what they actually
mean:</div>
<div class=""><br class="">
</div>
<div class="">By “ceiling” we mean the minimal depth that
(according to the model) would support the current inert gas
loadings of the diver’s body.</div>
<div class=""><br class="">
</div>
<div class="">The difference to the stop depth comes about as the
diver does not instantaneously pop to the ceiling depth but we
take a finite ascent rate into account. During that ascent, some
of the tissues will already desaturate which can move the
ceiling upwards so that at the time when the diver reaches the
old ceiling depth it has moved up. In particular with the
3m/10ft quantization of stop depths that can have a significant
effect. </div>
<div class=""><br class="">
</div>
<div class="">In your example, the true (unquantized) ceiling is
at 10m, so it does not have to move much to make 9m rather than
12m the first stop depth.</div>
<div class=""><br class="">
</div>
<div class="">Does that help?</div>
<div class=""><br class="">
</div>
<div class="">Best</div>
<div class="">Robert<br class="">
<div class="">
<div class="">
<div class="">
<div class="">
<div class=""><br class="">
-- <br class="">
.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oOo.oO<br
class="">
Robert C. Helling Elite Master Course Theoretical
and Mathematical Physics<br class="">
Scientific Coordinator<br
class="">
Ludwig Maximilians Universitaet
Muenchen, Dept. Physik<br class="">
Phone: +49 89 2180-4523
Theresienstr. 39, rm. B339<br class="">
<a moz-do-not-send="true"
href="http://www.atdotde.de" class="">http://www.atdotde.de</a></div>
<div class=""><br class="">
</div>
<div class="">Enhance your privacy, use cryptography! My
PGP keys have fingerprints</div>
<div class="">A9D1 A01D 13A5 31FA 6515 BB44 0820 367C
36BC 0C1D and</div>
<div class="">DCED 37B6 251C 7861 270D 5613 95C7 9D32
9A8D 9B8F</div>
<div class=""><br class="">
</div>
</div>
</div>
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