condition	mean	min	max
4 h after light	8.14282	7.858789999999999	8.30587
8 h after light	8.308666666666667	8.09326	8.46167
12 h after light	8.46877	8.31588	8.58925
4 h after dark	8.735853333333333	8.58959	8.845080000000001
8 h after dark	8.606103333333333	8.48098	8.67641
12 h after dark	8.39238	8.050839999999999	8.92302