condition	mean	min	max
4 h after light	17.8039	16.2517	19.3561
8 h after light	12.2868	11.3785	13.1951
12 h after light	14.2664	13.5497	14.9831
4 h after dark	17.862333333333332	17.7771	17.9061
8 h after dark	23.610566666666667	23.1157	24.2901
12 h after dark	20.6854	19.0563	23.0084