condition	mean	min	max
4 h after light	5.25882	3.97983	6.53781
8 h after light	4.258115	4.00225	4.51398
12 h after light	7.47938	7.24195	7.71681
4 h after dark	11.0783	9.5884	11.9007
8 h after dark	12.816756666666667	9.76117	14.5414
12 h after dark	5.218186666666666	4.92845	5.71048