condition	mean	min	max
4 h after light	19.641849999999998	18.6177	20.666
8 h after light	9.929929999999999	9.58286	10.277
12 h after light	6.66057	6.26812	7.05302
4 h after dark	8.097913333333333	6.04335	9.54089
8 h after dark	13.465166666666667	12.3036	14.7439
12 h after dark	18.789433333333335	17.8982	19.7449