condition	mean	min	max
4 h after light	19.041400000000003	17.8743	20.2085
8 h after light	7.17792	6.9286	7.42724
12 h after light	2.666755	2.59658	2.73693
4 h after dark	9.633486666666666	8.27856	10.3137
8 h after dark	13.7253	11.6788	15.2721
12 h after dark	22.987966666666665	21.1906	24.9561