condition	mean	min	max
4 h after light	7.7043066666666675	7.574260000000001	7.8581
8 h after light	7.79104	7.75902	7.843999999999999
12 h after light	7.713366666666666	7.618289999999999	7.85697
4 h after dark	7.76051	7.7442899999999995	7.773510000000001
8 h after dark	7.680036666666667	7.597	7.82211
12 h after dark	7.623923333333333	7.47283	7.74