It is still not clear what you are asking. Are you wanting WeeWX to estimate
cloud base? If so then WeeWX should already be calculating cloud base (stored in WeeWX field ‘cloudbase’). You can verify this by stopping WeeWX and
running WeeWX directly, this will show the contents of loop packets and archive records on the console. Does cloudbase appear? If it does and your database is using the wview_extended schema then cloudbase should be automatically saved to database. If you want to display cloudbase on your NeoWX page(s) I suggest you contact the NeoWX author.
If you want to do something else entirely I suggest you post your question in detail in your native language and I am sure someone will work out what you are after.