condition	mean	min	max
4 h after light	7.637393333333334	7.5450800000000005	7.70585
8 h after light	7.942206666666666	7.898060000000001	7.97779
12 h after light	8.303703333333333	8.26384	8.37066
4 h after dark	8.002930000000001	7.818010000000001	8.14785
8 h after dark	7.8076099999999995	7.73049	7.906289999999999
12 h after dark	7.76673	7.574510000000001	8.04401