value not float leading to unknown state of entities

[wagnst]

as mentioned already in #11
i am seeing regular issues with the integration leading to NaN data in HA:

2024-08-21 17:55:04.450 WARNING (SyncWorker_7) [custom_components.dhmz.weather] Unknown DHMZ weather symbol: None
2024-08-21 17:55:04.453 WARNING (MainThread) [custom_components.dhmz.weather] Temperature - value not float: 
2024-08-21 17:55:04.453 WARNING (MainThread) [custom_components.dhmz.weather] Humidity - value not float: 
2024-08-21 17:55:04.453 WARNING (MainThread) [custom_components.dhmz.weather] Pressure - value not float: 
2024-08-21 17:55:04.453 WARNING (MainThread) [custom_components.dhmz.weather] Wind speed - value not float: 

i'm not sure what happens, but visiting the site itself, i see it as available, e.g. via the website or via the XML api for the bespoke dataset.

is there any idea what is happening here? Are they rate limiting requests? If yes maybe instead it could just be skipped to write data to the entity for that occasion so the entities don't report Unknown?