condition	mean	min	max
4 h after light	8.378066666666667	8.222539999999999	8.67191
8 h after light	8.579726666666666	8.409419999999999	8.81645
12 h after light	8.26048	8.12889	8.50639
4 h after dark	7.63821	7.40638	7.94347
8 h after dark	7.53151	7.3108699999999995	7.93957
12 h after dark	7.055203333333333	6.87125	7.244789999999999