More detailed information is provided in the README file.
The json files are also available in the Zenodo repository: 10.5281/zenodo.5735624
See also the following paper: Marongiu, Paola, Dell’Oro, Francesca, “From static to interactive maps: drawing diachronic maps of (Latin) modality with Pygmalion”. Journal of Open Humanities Data 8, p.2, 1-14, 2022. DOI: http://doi.org/10.5334/johd.58.