condition	mean	min	max
4 h after light	7.271926666666666	7.02942	7.57543
8 h after light	6.971640000000001	6.61896	7.342280000000001
12 h after light	6.781420000000001	6.4749300000000005	7.11562
4 h after dark	6.89009	6.5591800000000005	7.355689999999999
8 h after dark	6.923473333333334	6.68641	7.35876
12 h after dark	6.787976666666667	6.626060000000001	6.8894899999999994