condition	mean	min	max
4 h after light	20.1899455	18.295833	22.084058
8 h after light	18.802571	17.613567	19.991575
12 h after light	19.469556	17.612895	21.326217
4 h after dark	19.515324	15.741903	23.288745
8 h after dark	28.183847	21.326217	35.041477
12 h after dark	21.838776	21.838776	21.838776