> On 7 Sep 2022, at 10:32, Jef Driesen wrote:
>
> On 5/09/2022 17:25, Attilla de Groot wrote:
>> I looked at the dive profile and the xml, but I don’t see anything that would
>> explain this. I was just diving with 100% o2 and AIR as diluent. I did have a
>> transmitter to my bailout stage that also had AIR. Could this be related?
>> I have downloaded the log through the shearwater (android) app and exported
>> it to Subsurface. A bit of a long way around, but in the end it worked. I
>> have attached those outputs, perhaps that helps in any way?
>
> That shearwater xml file is interesting because it also contains a large
> amount of gas mixes, and many of those contain invalid values (e.g. 02
> percentages larger than 100%).
>
> For example the first sample contains:
>
>1.29
>0
>
> That's a mix containing 129% 02, which of course doesn't make any sense. When
> importing the dive into shearwater cloud desktop, I also get those many gas
> switches and the invalid values. See the attached screenshot.
>
> Except for those fractionO2 values, the rest of the data looks normal. So at
> first sight the problem appears to be in the raw data, and not the parsing.
> Maybe a bug in the Petrel firmware? I'll report the problem to shearwater.
>
> The UDDF export doesn't seem to contain any gas mix info at all, and when
> importing the shearwater xml into subsurface, the gas mix info seems to be
> ignored too. So that's probably why your workaround is working.
Thank you for looking into this, much appreciated. I’m curious how shearwater
will respond.
I have planned another CCR dive tomorrow. I’ll provide the same data again for
that dive.
— Attilla
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