condition	mean	min	max
4 h after light	6.569663333333334	6.43273	6.75713
8 h after light	6.876189999999999	6.7504100000000005	7.042669999999999
12 h after light	6.2679366666666665	6.19426	6.31425
4 h after dark	6.606066666666667	6.24864	6.841
8 h after dark	6.45363	6.2589	6.61716
12 h after dark	6.258636666666667	6.110130000000001	6.50389