condition	mean	min	max
4 h after light	7.744635000000001	7.26739	8.22188
8 h after light	8.896165	8.07356	9.71877
12 h after light	14.01325	13.2144	14.8121
4 h after dark	17.56726666666667	16.4908	18.9707
8 h after dark	15.253433333333334	12.2262	16.9594
12 h after dark	13.036266666666666	11.6692	14.7473