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. 2020 Jan 2;52(3):1140–1160. doi: 10.3758/s13428-019-01307-0

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© The Author(s) 2019

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 5 — Data quality measures at the start and end of recordings. Mean deviation, RMS-S2S, STD and data loss, averaged across participants for each of the head-worn eye-tracking setups (Tobii: Tobii Glasses 2 + firmware version 1.25.3-citronkola; Grip: Pupil headset + EyeRecToo (Grip/PuReST); Pupil-labs: Pupil headset + Pupil Capture; and SMI: SMI ETG2 + iViewETG) during the validation tasks at the start and at the end of the recordings. Error bars denote 95% confidence intervals, indicating variation across participants