condition	mean	min	max
4 h after light	8.570366666666667	8.478	8.71759
8 h after light	8.321506666666666	8.20974	8.4614
12 h after light	8.041653333333333	7.9569399999999995	8.182839999999999
4 h after dark	8.2576	8.202069999999999	8.35637
8 h after dark	8.3364	8.18856	8.4729
12 h after dark	8.550799999999999	8.39542	8.788839999999999