condition	mean	min	max
4 h after light	7.3995066666666665	7.178380000000001	7.62275
8 h after light	7.134573333333334	6.962260000000001	7.381460000000001
12 h after light	6.5871200000000005	6.554360000000001	6.6405199999999995
4 h after dark	6.831683333333333	6.630510000000001	7.030989999999999
8 h after dark	7.076553333333333	6.9533	7.255389999999999
12 h after dark	7.13724	7.03292	7.32372