discrepancies on dive time

Pedro Neves nevesdiver at gmail.com
Mon Jul 8 09:17:24 PDT 2013


Roger that. It makes sense to me.



On 2013-07-08 17:15, Linus Torvalds wrote:
> On Mon, Jul 8, 2013 at 3:18 AM, Pedro Neves <nevesdiver at gmail.com> wrote:
>> I have a dive profile on the attached xml file. The dive profile data is
>> around 56' long but Subsurface reports the divetime as 47'. Why is that?
> Oh, subsurface ends up ignoring surface time for many things (average
> depth, divetime, SAC etc).
> For example, if you end up doing a weight check (deep enough to
> trigger the "dive started") but then come back up and wait five
> minutes for your buddies, your dive computer may say that your dive is
> 50 minutes long - because you have fifty minutes worth of samples -
> but subsurface will say it's 45 minutes - because you were actually
> diving for 45 minutes.
> It's even more noticeable if you do things like divemastering the
> initial OW dives, when you may stay in the water for a long time, but
> spend most of it at the surface. And then you don't want that to count
> as some kind of long dive.
>                      Linus

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