<div dir="auto"><div><br><div class="gmail_extra"><br><div class="gmail_quote">On 25 Jan. 2018 9:34 pm, "Robert Helling" <<a href="mailto:helling@atdotde.de">helling@atdotde.de</a>> wrote:<br type="attribution"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word;line-break:after-white-space">Willem,<div><div class="quoted-text"><div><br><blockquote type="cite"><div>On 25. Jan 2018, at 10:48, Willem Ferguson <<a href="mailto:willemferguson@zoology.up.ac.za" target="_blank">willemferguson@zoology.up.ac.<wbr>za</a>> wrote:</div><br class="m_-8353902603785279277Apple-interchange-newline"><div><div text="#000000" bgcolor="#FFFFFF"><blockquote type="cite" style="font-family:Menlo-Regular;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><div dir="auto"><div dir="auto">Hi Willem,</div><div dir="auto">In the example you provide, the air NDL at 30m is 13min with gf 35/75. This looks about right to me. From memory the Buhlmann NDL (gf 100/100) is ~17min, and the PADI and navy tables are 2-3 minutes longer. Reducing the gf to 35/75 would reduce the NDL.</div></div></blockquote><br style="font-family:Menlo-Regular;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"><span style="font-family:Menlo-Regular;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);float:none;display:inline!important">I suspect this is not the complete explanation. The NAUI, NOAA and US Navy tables all give the NDL with air at 30m between 22 and 25 min. With gf=100/100, Subsurface gives 16 min. In addition, the profile does not get close to the ceiling at NDL. I suspect that, with initial cyl pressure not specified, the whole calculation just does not work. Forcing the bottom time to 26 min (gf=100/100) brings the ceiling close to the profile which is more or less acceptable. So that part of the planner works. But if the bottom time is specified as much shorter than 26 min, the NDL also is much shorter. There is a problem or bug there.</span><br style="font-family:Menlo-Regular;font-size:12px;font-style:normal;font-variant-caps:normal;font-weight:normal;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255)"></div></div></blockquote></div><div><br></div></div>how to you get the 16min from Subsurface? Because I seem to get 23min with GF 100/100:</div><div><br></div><div></div></div></blockquote></div></div></div><div dir="auto">I dare say the difference is due to your different ascent and descent rates</div><div dir="auto"><div class="gmail_extra"><div class="gmail_quote"><blockquote class="quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word;line-break:after-white-space"><div><br><div>
<div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><img id="m_-8353902603785279277314832E1-A199-4FE6-98DA-C9C35ED6CAC8" src="cid:3324A03E-49CA-4E5F-B4F7-E8118E78648B@theorie.physik.uni-muenchen.de"></div><div class="quoted-text"><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><br></div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">Best</div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">Robert</div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><br></div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">-- <br>.oOo.oOo.oOo.oOo.oOo.oOo.oOo.<wbr>oOo.oOo.oOo.oOo.oOo.oOo.oOo.<wbr>oOo.oOo.oOo.oOo.oOo.oO<br>Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics<br>                      Scientific Coordinator<br>                      Ludwig Maximilians Universitaet Muenchen, Dept. Physik<br>                      Phone: <a href="tel:+49%2089%2021804523" value="+498921804523" target="_blank">+49 89 2180-4523</a>  Theresienstr. 39, rm. B339<br>                      <a href="http://www.atdotde.de" target="_blank">http://www.atdotde.de</a></div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><br></div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">Enhance your privacy, use cryptography! My PGP keys have fingerprints</div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">A9D1 A01D 13A5 31FA 6515  BB44 0820 367C 36BC 0C1D    and</div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word">DCED 37B6 251C 7861 270D  5613 95C7 9D32 9A8D 9B8F</div><div style="color:rgb(0,0,0);font-family:Menlo;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;word-wrap:break-word"><br></div></div></div></div><br class="m_-8353902603785279277Apple-interchange-newline"></div><br class="m_-8353902603785279277Apple-interchange-newline"><br class="m_-8353902603785279277Apple-interchange-newline">
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