I work 27 hours a week, at home. I usually make a full day when I go grab some coffee at the office and talk to my colleagues, because otherwise I wouldn't get

I work 27 hours a week, at home. I usually make a full day when I go grab some coffee at the office and talk to my colleagues, because otherwise I wouldn't get anything done on those days. So effectively that's about 4 hours a day. Of course I can just squeeze in more hours if I have an interesting task at hand; then I can just keep the following day off (except checking email occasionally, that's no problem).