condition mean min max 4 h after light 2.66243 2.31448 3.01038 8 h after light 2.56351 2.46188 2.66514 12 h after light 3.565485 3.24472 3.88625 4 h after dark 4.297675 4.233 4.36235 8 h after dark 3.247785 3.1689 3.32667 12 h after dark 3.285045 2.96034 3.60975