Hi @twentythree, thank you very much for the detailed reply and the graphs.
Indeed, the filter implementations were different across both SDK’s. For your information, the C4 filtering algorithm was changed some versions ago on the firmware, so you might get better results by ensuring to run the latest firmware version just in case you are not already.
In any event, I am afraid that full unfiltered raw data is only available for via the Tobii Pro SDK in conjunction with a Pro license purchasable through us. Please let me know if you would be interested in this. Apologies for the disappointing news.