condition	mean	min	max
4 h after light	5.5584050000000005	5.25893	5.85788
8 h after light	6.814695	6.67417	6.95522
12 h after light	8.55854	8.10119	9.01589
4 h after dark	12.37715	11.1113	13.643
8 h after dark	9.453285000000001	9.42502	9.48155
12 h after dark	8.89426	8.84377	8.94475