condition	mean	min	max
4 h after light	21.09655	21.0145	21.1786
8 h after light	12.84675	10.0666	15.6269
12 h after light	13.748149999999999	13.4121	14.0842
4 h after dark	16.959249999999997	15.1131	18.8054
8 h after dark	20.7745	20.6836	20.8654
12 h after dark	23.9374	23.5356	24.3392