@Edent It has a custom table with a very basic structure, so backfilling data should be really easy once you have it transformed from your source data.
statify/inc/class-statify.php at 5fcd93fb6aa074b9a16a106184754f9ae72a7c3f · pluginkollektiv/statify
Statify – statistics plugin for WordPress. Contribute to pluginkollektiv/statify development by creating an account on GitHub.
GitHub (github.com)