condition	mean	min	max
4 h after light	6.848603333333333	6.64348	7.05315
8 h after light	6.9432833333333335	6.8585199999999995	7.04603
12 h after light	6.376803333333333	6.173830000000001	6.63403
4 h after dark	6.1478399999999995	6.0215	6.29772
8 h after dark	6.166706666666667	5.92152	6.29272
12 h after dark	6.12679	5.92897	6.45857