condition	mean	min	max
4 h after light	15.54045	14.9854	16.0955
8 h after light	6.775635	6.0894	7.46187
12 h after light	6.450855	6.30291	6.5988
4 h after dark	7.45648	7.3109	7.74762
8 h after dark	9.720566666666667	9.29508	10.1203
12 h after dark	11.858466666666667	10.1949	13.3749