condition	mean	min	max
0 h after light	8.95865	8.59416	9.32314
4 h after light	6.68594	5.94783	7.42405
8 h after light	6.766195	6.39466	7.13773
4 h after dark	8.6172	7.80996	9.42444
8 h after dark	9.703890000000001	9.45404	9.95374
12 h after dark	8.178065	7.74581	8.61032