The attached sml file is from a Suunto Ambit 2, it might look different from a Ambit 3 though (I don't own a Ambit 3) For this reason I'm using the lap function to track my intervals because I can start the laps manually on the Suunto Ambit. and therefore have to start your intervals manually whenever you have a stretch of road in front of you where you can power up uninterupted for the next 3 minutes. It doesn't work when you do your intervals on a public road where you have to consider villages, traffic lights etc, roundabouts etc. The Suunto Ambit has a native Interval function as well but it's it kind of automatic and triggers on GPS position or GPS distance and therefore it is only usable for people who are training on a sports track. This specific ride contains 13 laps, every lap with an even number (2,4,6 etc.) is a 'power interval', every uneven one is 'relax interval' - therefore this ride had 6 power intervals, every one roughly about 3 minutes long. I'll attach the sml, fit, gpx and tcx files (all from the same ride) to this post so if you have time to look at it it might help you to figure out how to implemet sml support into GC.

power correct but got the laps / intervals all wrong. The Good thing about the fit File Import was that it imported the intervals correctly (I use the lap feature on the ambit to make intervals) The *.fit file had the average speed and power data wrong: Average Speed was 62.6 (should be around 32.8) and the average power was 116 Watts (should be around 235W). The Suunto Movescount let's you export the data files as *.kml, *.gpx, *.xlsx, *.fit and *.tcx files and I could import the gpx, fit and tcx files into GC but unfortunately none of them showed all values correct: My name is Roland, I'm joining this coversation because Suunto *.sml support is something I would be interested as well:

Sporttracks 3 serial number