condition	mean	min	max
4 h after light	9.287485	8.12057	10.4544
8 h after light	8.89357	8.85042	8.93672
12 h after light	9.28551	9.22728	9.34374
4 h after dark	11.57265	11.0655	12.0798
8 h after dark	11.65485	11.4998	11.8099
12 h after dark	12.37915	12.2413	12.517