Istituto Nazionale di Geofisica e Vulcanolgia 2020 @Creative Commons Attribution 4.0 International (CC BY 4.0)

Please take vision of the website data policy.
The downloads are limited to a certain number of record at once; the maximum timespan for a single query depends on the specific instruments and on the number of the fields/parameters queried (approx. 1 day for raw ionograms, TEC maps and full parameters GNSS scintillation data, several days for configuration with less parameters). When a query requires more than 1 minutes the service will stop the execution and the requests will fail; in this case, consider to reduce the temporal range or use the web service to code your own script.