condition	mean	min	max
4 h after light	8.861153333333332	8.825569999999999	8.88932
8 h after light	7.708653333333333	7.6257399999999995	7.79652
12 h after light	7.727413333333334	7.57587	7.86545
4 h after dark	8.25791	8.12831	8.450289999999999
8 h after dark	8.99081	8.92585	9.04487
12 h after dark	9.280666666666667	9.19812	9.434330000000001