condition	mean	min	max
4 h after light	8.15849	8.05666	8.32939
8 h after light	8.10636	7.88175	8.39197
12 h after light	8.024556666666665	7.91448	8.09489
4 h after dark	8.07682	7.836139999999999	8.25121
8 h after dark	8.08206	7.9042699999999995	8.18411
12 h after dark	8.1212	8.04113	8.16312