condition mean min max 4 h after light 22.40155 19.2366 25.5665 8 h after light 56.87395 56.8407 56.9072 12 h after light 83.1043 80.0713 86.1373 4 h after dark 81.2758 78.3073 85.0687 8 h after dark 67.5111 62.3835 71.5468 12 h after dark 32.83663333333333 30.1174 34.5252