condition mean min max 4 h after light 46.3771 45.5905 47.1637 8 h after light 46.37565 43.7673 48.984 12 h after light 49.02785 45.2539 52.8018 4 h after dark 71.7056 63.4016 80.2043 8 h after dark 102.2052 98.2736 106.989 12 h after dark 97.60083333333333 95.9444 100.24