condition	mean	min	max
4 h after light	17.5609	17.1557	17.9661
8 h after light	20.4696	20.083	20.8562
12 h after light	18.2973	17.1198	19.4748
4 h after dark	22.2863	20.6451	23.1368
8 h after dark	26.184166666666666	25.7512	26.7392
12 h after dark	20.092366666666667	19.1127	21.8056