condition	mean	min	max
4 h after light	8.299533333333333	8.19327	8.51032
8 h after light	8.283383333333333	8.15376	8.40456
12 h after light	8.18185	8.143510000000001	8.23237
4 h after dark	8.10294	7.90627	8.37472
8 h after dark	7.9607	7.78874	8.05833
12 h after dark	7.985736666666667	7.874560000000001	8.06577