condition	mean	min	max
4 h after light	8.51198	8.340639999999999	8.64692
8 h after light	8.19934	8.0036	8.43328
12 h after light	7.610813333333334	7.525980000000001	7.77687
4 h after dark	8.08107	7.91705	8.37213
8 h after dark	8.309516666666667	8.2073	8.473289999999999
12 h after dark	8.407886666666666	8.26351	8.63995