condition	mean	min	max
4 h after light	7.066025	6.81495	7.3171
8 h after light	8.76472	8.10021	9.42923
12 h after light	8.946585	8.80328	9.08989
4 h after dark	11.856783333333333	9.39425	13.4888
8 h after dark	6.793733333333334	5.46394	9.06243
12 h after dark	6.500843333333333	5.17741	7.22757