condition mean min max 0 h after light 3.2254449999999997 3.04399 3.4069 4 h after light 3.072395 2.81407 3.33072 8 h after light 2.98246 2.62435 3.34057 4 h after dark 3.533625 3.20857 3.85868 8 h after dark 3.825055 3.80882 3.84129 12 h after dark 2.80646 2.75895 2.85397