condition	mean	min	max
0 h after light	6.43574	6.25115	6.62033
4 h after light	7.63011	7.11573	8.14449
8 h after light	7.70421	6.47461	8.93381
4 h after dark	10.21035	8.9543	11.4664
8 h after dark	9.478025	9.13681	9.81924
12 h after dark	6.56656	6.11909	7.01403