condition mean min max 4 h after light 2.08811 1.7247 2.45152 8 h after light 1.96276 1.80015 2.12537 12 h after light 1.92632 1.6611 2.19154 4 h after dark 3.13937 2.79655 3.6846 8 h after dark 3.8803866666666664 3.76364 3.95761 12 h after dark 2.33357 1.93693 2.59617