condition	mean	min	max
4 h after light	4.442735	3.40125	5.48422
8 h after light	6.49865	5.07469	7.92261
12 h after light	9.297915	7.99323	10.6026
4 h after dark	18.1453	17.9052	18.3854
8 h after dark	11.3744	11.3241	11.4247
12 h after dark	7.93362	7.61932	8.24792