Documentation needs to be updated with missing variables

[skuske]

As far as I can tell, various variables are missing from the Api-Docs section of the website, especially in the 'Daily Weather Variables' section. This has caused me a lot of headaches, because it is unclear which variables are actually available but not documented. It would be nice if this could finally be corrected in the near future so that all users are immediately aware of which variables are available.

Many thanks in advance! :o)