condition	mean	min	max
4 h after light	8.294406666666667	8.18807	8.352039999999999
8 h after light	8.30485	8.04945	8.45726
12 h after light	8.316516666666667	8.24897	8.44875
4 h after dark	8.420156666666667	8.17276	8.67261
8 h after dark	8.33452	8.09197	8.54243
12 h after dark	8.32081	8.254760000000001	8.43515