condition	mean	min	max
4 h after light	7.3548599999999995	7.1604399999999995	7.4610899999999996
8 h after light	7.17928	7.04099	7.304810000000001
12 h after light	7.109563333333333	6.82942	7.2740800000000005
4 h after dark	7.111446666666667	6.907660000000001	7.323119999999999
8 h after dark	6.644876666666667	6.33789	6.887230000000001
12 h after dark	6.605466666666667	6.23471	6.960839999999999