condition	mean	min	max
0 h after light	18.17435	17.7371	18.6116
4 h after light	14.03245	12.6554	15.4095
8 h after light	13.7089	13.4117	14.0061
4 h after dark	17.592750000000002	16.4993	18.6862
8 h after dark	16.60965	15.3726	17.8467
12 h after dark	15.3292	14.8994	15.759