condition	mean	min	max
4 h after light	7.140395	6.40824	7.87255
8 h after light	7.66102	7.54069	7.78135
12 h after light	11.034735	7.85077	14.2187
4 h after dark	17.526600000000002	15.1271	19.9261
8 h after dark	13.42745	12.6968	14.1581
12 h after dark	10.9262	10.5243	11.3281