condition	mean	min	max
4 h after light	8.109	8.06161	8.17835
8 h after light	8.134653333333333	7.98044	8.21193
12 h after light	8.26272	7.924930000000001	8.60988
4 h after dark	8.141313333333333	7.67933	8.59276
8 h after dark	8.151563333333334	7.60682	8.701310000000001
12 h after dark	8.0611	7.66597	8.26949