condition	mean	min	max
4 h after light	21.3909735	20.400307	22.38164
8 h after light	16.720556000000002	15.697015	17.744097
12 h after light	15.980712	15.258208	16.703216
4 h after dark	15.677305	15.341971	16.012639
8 h after dark	17.914326000000003	17.180886	18.647766
12 h after dark	34.895245	34.895245	34.895245