All of it. I'm completely oblivious to the meaning of radio updates.
Basically, in the case of 22.71 (+0.22), it means that 22.71 million people heard the song on UK radio from Monday 19th to Sunday 25th, which is 0.22 million more people than heard it on UK radio from Monday 12th to Sunday 18th
Basically, in the case of 22.71 (+0.22), it means that 22.71 million people heard the song on UK radio from Monday 19th to Sunday 25th, which is 0.22 million more people than heard it on UK radio from Monday 12th to Sunday 18th