The trick is that everyone is both in my experience. I had weeks where i worked barely 10 hours (well, a week actually, but in my defense, the onboarding was shit), including meetings and mails. Most of the time once i understand what i have to do (and that can take some time), i'm around 20 to 30 hours. But i know i can whip myself and work 45 full hours (legal duration in my country is 35), as i did during august when the team was on vacation and we had a lot of fires to tend to, for two weeks.