condition	mean	min	max
4 h after light	7.422596	6.666102	8.17909
8 h after light	6.9837395	6.699877	7.267602
12 h after light	6.5489885	6.311337	6.78664
4 h after dark	7.3144825	6.949342	7.679623
8 h after dark	6.419795	6.270173	6.569417
12 h after dark	7.617747	7.617747	7.617747