condition	mean	min	max
4 h after light	7.413873333333333	7.15525	7.7690399999999995
8 h after light	7.37999	7.0819	7.7144699999999995
12 h after light	7.6899733333333335	7.32683	8.11342
4 h after dark	7.707046666666667	7.350280000000001	8.08041
8 h after dark	7.7563	7.49465	8.12113
12 h after dark	8.02107	7.756189999999999	8.54097