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Thank you Robert. I set the dives through mail.

I still think there is some communication barrier here.

I wrote to "NDL" dives in my reply to gr3yw0lf since I thought his comment on my choice of gradient factors was pushing the discussion in the wrong direction. No recreational dive computer would consider these dives deco dives on default ...

Yea, I think there some real misunderstanding with the data I'm trying to present. Might be that you're not familiar with how Subsurface displays the information. Or something else is wrong (I do notice that the order of the images is wrong when watching the thread under the reply editor compared ...

gr3ywolf, it makes absolutely no difference if I set the dive computer as first or third. Subsurface calculates the ceiling for the data from the dive computer that is currently displayed. These are all "NDL" dives, I'm not holding a deco stop (except for the end of the 2nd dive where I stayed at 3 ...

For reference. On the first dive Subsurface calculates 64 as surface GF when OSTC ends the deco, and on the 2nd dive the surface GF is 60 when deco ends.

On the dives I did a couple of weeks ago I used 50/70 as gradient factors. On the first dive Subsurface calculated the a surface GF of 68 when ...

Yea, as jb2cool says. What I am concerned about is the big difference compared to the two other Buhlmann implementations for the 2nd dive. I had another dive a couple of weeks ago which showed similar behavior, but on that dive I had difference settings on the dive computers and there where other ...

I did some dives with my new OSTC Sport (running hwos sport 10.73) with fairly conservative settings, GF 50/65. On the first dive it was fairly close to my Garmin watch with the same gradient factors. However, on the 2nd dive I had to get much shallower for the OSTC to start counting down the deco ...

Maybe this will fix it: https://github.com/subsurface/libdc/pull/32

I looked into this a bit. I'm not sure about the earlier version, but checked the hwos_interface.pdf in the hwos source tree. It seems like libdivecomputer is using byte 82 (Dive mode), which is 0 for OC and 1 for CCR. Instead of byte 79 (Deco model), which is 0 for ZH-L16 and 1 for ZH-L16-GF ...

So the Sport has a runtime of up to 100 hours with a 1.5V battery while the Plus has up to 50 hours. Since it mentions that the Sport has a brighter screen I wonder if both of these are due to the transflective screen. I.e. when it's bright you can turn the back light on the Sport down and save ...