Wow, I don't understand these timetables at all. I'm doing aero, how much free time do you get each day on average or is it 9-5 straight with only a lunch break?
As tupp said, you'll either do the first 2 labs of the week, or the last 2, depending which group you get put in, so only 6 hours of lab a week (only ). That's Physics only by the way, Chem people for example have labs like every day