condition	mean	min	max
4 h after light	5.982496666666667	5.898630000000001	6.07682
8 h after light	6.171426666666666	5.92389	6.32142
12 h after light	6.15965	5.94412	6.27
4 h after dark	6.16543	6.1352199999999995	6.22369
8 h after dark	6.218653333333333	5.86716	6.48565
12 h after dark	6.18497	6.0490900000000005	6.4352599999999995