condition	mean	min	max
4 h after light	16.47175	14.849	18.0945
8 h after light	7.393075	7.19177	7.59438
12 h after light	6.0485050000000005	5.22792	6.86909
4 h after dark	14.3003	10.9333	17.6673
8 h after dark	15.15635	13.4934	16.8193
12 h after dark	15.842749999999999	15.127	16.5585