condition	mean	min	max
4 h after light	6.44428	4.60655	8.28201
8 h after light	11.5503	11.0783	12.0223
12 h after light	14.59385	13.5807	15.607
4 h after dark	21.6719	21.0979	22.3913
8 h after dark	8.050973333333333	7.88059	8.23377
12 h after dark	8.93261	6.79079	10.1519