Difference in average depth reported by watch and app
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I have noticed that there is a significant difference between the average depth reported by the watch and the app. The difference is mostly more than 10% where the watch generally report the higher average depth.
The highest difference was recorded on an trainings dive where my average depth reported by the watch is 5m while the app reports 3m that’s almost double.
I would like to know where the difference originates especially for calculating my AMV (not using a tank pod) the right average depth is important. -
Very interesting discovery. I hadn’t noticed it before, but it’s really true.
I analysed one of my dives.
Effective dive time (underwater) 76 minutes.
Average depth on the Ocean: 11.9 metres
Average depth in the app: 11.5 metres. I analysed the FIT file of a dive and found that the Ocean takes the effective average of the dive. The app calculates the average including the surface time of 2 minutes. This means that every 10 seconds a ‘depth’ of 0.00 metres is added. Depending on the duration of the dive, this has a greater or lesser influence on the difference in average depth.
I hope I have explained this clearly.
However, Suunto should ensure that the same value is used on both the Ocean and in the app, which in my opinion should be the one from the Ocean. -
@trianst
Thanks yeah that make sens to me. Especially with my 5 minute surface interval before the dive is ended the deviation gets even bigger.
I would also love suunto to fix this in their app. Especially that the dive time and all other stats are the same. -
Interesting issue. Just because I am curious: Do you use this metric somehow? It sounds like it could be useful for something, but in the past I only recorded Max Depth for my dives
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As mentioned in my initial post. I don’t have a tank pod caus I mainly use rental gear. But by knowing your average depth of the dive as well as start and end pressure of your tank you can calculate how much air you breath over time.
It’s especially interesting in planing dives. In means of how long does your air lasts and setting limits to tank fill-level pair depth. This would allow a safe assent in case you or your buddie is suddenly out of air at greater depth. -
@ritzmo A very good reason - thank you for clarifying it. Just noticed I have the value in the SSI App coming from a Mares Smart computer
