condition	mean	min	max
4 h after light	7.512143333333333	7.407610000000001	7.60117
8 h after light	7.8893	7.7188	7.97505
12 h after light	8.839766666666666	8.77052	8.90385
4 h after dark	8.40618	8.2585	8.54996
8 h after dark	7.989940000000001	7.87621	8.16845
12 h after dark	7.705636666666666	7.63495	7.80392