condition	mean	min	max
4 h after light	9.083129999999999	8.79766	9.474839999999999
8 h after light	8.87676	8.58768	9.34013
12 h after light	9.0198	8.872160000000001	9.179789999999999
4 h after dark	8.896486666666666	8.43028	9.30916
8 h after dark	9.013413333333332	8.54412	9.4198
12 h after dark	9.151493333333333	8.96177	9.3854