I'm not meaning to limit myself, just want to target higher CPC for the prime business hours. My traffic slows significantly during off hours. People generally aren't searching for my products unless they need to. Of course there are exceptions...
I ad mostly into UK and get session peaks around 10-11:00 (coffee break at work? - around 33% of my UK Traffic), Just after lunch 14:00 -15:00 is a further 15% ish (Tea breaks?), early evening aroun 20:00-21:00 then a further small peak later around 22:30 - 23:00. Dunno if we're the norm - hope this helps someone.