condition	mean	min	max
4 h after light	6.898216666666666	6.80468	7.0692699999999995
8 h after light	6.754393333333334	6.37673	7.00305
12 h after light	6.886246666666667	6.71748	7.1187
4 h after dark	6.59453	6.32356	6.81805
8 h after dark	6.7706599999999995	6.511909999999999	7.05662
12 h after dark	6.7825500000000005	6.45097	7.03672