condition	mean	min	max
4 h after light	17.4107	15.0961	19.7253
8 h after light	10.44385	9.0445	11.8432
12 h after light	5.32991	5.01586	5.64396
4 h after dark	5.589253333333334	4.77087	6.04583
8 h after dark	16.399366666666666	15.9411	16.9726
12 h after dark	17.723833333333335	16.4006	20.1155