condition	mean	min	max
4 h after light	17.5192555	15.485513	19.552998
8 h after light	19.6516605	18.783347	20.519974
12 h after light	20.7980745	18.243605	23.352544
4 h after dark	18.339927	17.960001	18.719853
8 h after dark	13.4004995	12.600934	14.200065
12 h after dark	13.392357	13.392357	13.392357