condition	mean	min	max
4 h after light	3.902235	3.29315	4.51132
8 h after light	7.47068	6.91276	8.0286
12 h after light	9.1905	8.97692	9.40408
4 h after dark	11.985333333333333	10.2445	12.8764
8 h after dark	9.34746	9.04596	9.84202
12 h after dark	6.237533333333333	6.08732	6.40982