condition	mean	min	max
4 h after light	6.79441	6.71055	6.9229
8 h after light	6.693989999999999	6.504919999999999	6.871060000000001
12 h after light	6.674636666666666	6.48002	6.83551
4 h after dark	6.91826	6.6846	7.1700800000000005
8 h after dark	6.880053333333334	6.52798	7.12983
12 h after dark	6.908823333333333	6.63571	7.28349