condition	mean	min	max
0 h after light	15.53745	14.9071	16.1678
4 h after light	16.6069	16.1294	17.0844
8 h after light	20.3781	20.0089	20.7473
4 h after dark	22.3194	20.5509	24.0879
8 h after dark	20.485799999999998	18.0403	22.9313
12 h after dark	14.792100000000001	12.3605	17.2237