condition	mean	min	max
4 h after light	13.0184365	12.835983	13.20089
8 h after light	15.269336500000001	14.065145	16.473528
12 h after light	17.6520815	16.404045	18.900118
4 h after dark	16.8131595	13.385785	20.240534
8 h after dark	17.93545	16.482152	19.388748
12 h after dark	14.928062	14.928062	14.928062