condition	mean	min	max
0 h after light	13.79775	12.6293	14.9662
4 h after light	14.8164	14.7514	14.8814
8 h after light	18.42105	16.3041	20.538
4 h after dark	19.40315	17.6977	21.1086
8 h after dark	19.5002	18.8091	20.1913
12 h after dark	15.95055	13.9966	17.9045