Hi @johnting,
The fixation data is included within the EyeX SDK data stream where we specify fixation start time, end time and location.
We provide a guide in obtaining this information with sample code available @
https://tobii.github.io/CoreSDK/articles/streams.html
Please bear in mind that the long term storage of gaze data which is what you appear to be doing, is explicitly
forbidden in the EyeX SDK licence agreement, so please ensure you have obtained the correct licence for your activities.
Contact the licencing team [email protected] in case of doubt.
If you would like to be more explicit with your setup (SDK variant, eye tracker, etc) I would be better placed to help you further.