condition	mean	min	max
4 h after light	18.23775	14.8973	21.5782
8 h after light	11.006915	8.94303	13.0708
12 h after light	8.543230000000001	7.94914	9.13732
4 h after dark	11.833666666666666	10.3643	14.0505
8 h after dark	17.588966666666668	15.4032	19.6673
12 h after dark	18.1453	17.8081	18.5872