I hate when Google interpolated data, i.e. used previous days of information to fill it in, it is just not real.Here is Johns tweet: Sometimes we can restore it, sometimes theres simply data loss. In the past weve looked at simply including interpolated data, but imo thats iffy (particularly with keywords, etc).”The charts can look pretty bad for some websites: And normal for others – but even if it looks regular for you, you are probably missing out on some data.