condition	mean	min	max
4 h after light	8.256373333333332	8.09184	8.40921
8 h after light	8.150833333333333	7.885860000000001	8.53636
12 h after light	8.869556666666668	8.75032	9.0675
4 h after dark	8.44895	8.10287	8.83596
8 h after dark	8.197316666666666	7.963589999999999	8.53739
12 h after dark	8.4087	8.332510000000001	8.54392