condition	mean	min	max
0 h after light	16.01095	15.1524	16.8695
4 h after light	12.5552	11.6557	13.4547
8 h after light	19.404899999999998	19.0569	19.7529
4 h after dark	20.11615	19.4871	20.7452
8 h after dark	17.0967	16.0389	18.1545
12 h after dark	14.579899999999999	14.2609	14.8989