This dataset, "English /r/ in German Learner English: Dataset for chapter 6 in "Phonological variation in German Learner English"", may be reused according to the Creative Commons Attribution 4.0 International (CC BY 4.0) license as described here: https://creativecommons.org/licenses/by/4.0/.
The data contained in the tabular file "r_data_pascoe.csv" has been extracted from tables and other parts of the following academic work:
Pascoe, Graham. 1987. Die Aussprache des Englischen an bayerischen Schulen. München: Profil.
and rearranged into the tabular form in the file "r_data_pascoe.csv".
Therefore, the data from Pascoe (1987) as reused in the file "r_data_pascoe.csv" represent facts and are reused under Public Domain conditions as described here:
https://creativecommons.org/share-your-work/public-domain/pdm/.
The data contained in the tabular file "r_data_rank.csv" are based on data extracted from the following academic work:
Rank, Isabel. 2018. Realisation of post-vocalic /r/ by advanced German learners of English. Unpublished BA thesis, University of Bamberg, Germany.
These data are here reused according to the Creative Commons Attribution 4.0 International (CC BY 4.0) license as described here:
https://creativecommons.org/licenses/by/4.0/ with the permission from the author (see the file "data_consent_rank.pdf").
The data contained in the tabular file "r_data_wunder.csv" are based on data extracted from the following academic work:
Wunder, Christina. 2012. Final devoicing in German Learner English: A study at a Franconian grammar school. University of Bamberg, Germany MA thesis.
These data are here reused according to the Creative Commons Attribution 4.0 International (CC BY 4.0) license as described here:
https://creativecommons.org/licenses/by/4.0/ with the permission from the author (see the file "data_consent_wunder.pdf").