condition	mean	min	max
4 h after light	8.919926666666667	8.84335	9.03656
8 h after light	8.65836	8.52789	8.79093
12 h after light	8.6893	8.63275	8.72988
4 h after dark	8.11575	7.91728	8.26598
8 h after dark	7.657336666666667	7.5127	7.81303
12 h after dark	7.102493333333333	6.83833	7.29555