This repository relates to the material necessary for presentation given at the OSSConf2025 conference (see https://ossconf.fri.uniza.sk/). Mainly a Quarto HTML document and a script for demonstration of what is written in the accompanying proceedings are included. The processed geodata can be found at https://www.perun-klima.cz/scenare/index.php. Comments are written in Czech (UTF-8 encoding).