condition	mean	min	max
4 h after light	6.471355	5.91699	7.02572
8 h after light	3.69444	3.57649	3.81239
12 h after light	4.36567	4.29136	4.43998
4 h after dark	9.131685000000001	8.97999	9.28338
8 h after dark	10.243295	9.70679	10.7798
12 h after dark	9.890575	9.86236	9.91879