condition	mean	min	max
4 h after light	8.8408	8.30637	9.17478
8 h after light	8.20065	7.613589999999999	8.59702
12 h after light	8.379183333333334	7.87483	8.67446
4 h after dark	8.415186666666667	7.74339	8.78761
8 h after dark	8.3095	7.727060000000001	8.70465
12 h after dark	8.210416666666667	7.537719999999999	8.57392