condition	mean	min	max
4 h after light	8.6589365	8.030601	9.287272
8 h after light	8.721359499999998	8.327625	9.115094
12 h after light	8.5915875	8.339535	8.84364
4 h after dark	7.698216	7.575977	7.820455
8 h after dark	7.866303	7.128508	8.604098
12 h after dark	8.84364	8.84364	8.84364