condition	mean	min	max
4 h after light	8.718216666666667	8.13568	9.07744
8 h after light	8.79725	8.33656	9.14583
12 h after light	8.799963333333332	8.48321	8.96295
4 h after dark	8.500343333333333	8.19398	8.70882
8 h after dark	8.29692	7.80783	8.56282
12 h after dark	8.343499999999999	7.99675	8.53698