condition mean min max 4 h after light 5.95961 5.28332 6.6359 8 h after light 4.632 4.60426 4.65974 12 h after light 5.4370899999999995 5.13225 5.74193 4 h after dark 6.270776666666666 6.20435 6.38006 8 h after dark 6.797866666666667 6.42064 7.13689 12 h after dark 5.76217 5.43429 6.08909