Daily (historic) PV generation data

I'm sure a while ago in the portal I could find (historic) daily generation data. I thought it was under the PV data tab but I can't see it there. Maybe I'm being really thick. Can anyone please help? Thanks

I'm also confused about the current day generation. Which one should I believe?

The Energy Graphs are always way out of whack. My Energy graphs are often a third of what the meter readings say.