condition	mean	min	max
0 h after light	6.499230000000001	6.33096	6.6675
4 h after light	3.82544	3.68117	3.96971
8 h after light	4.14179	3.30489	4.97869
4 h after dark	4.872095	4.80183	4.94236
8 h after dark	5.6186	5.48163	5.75557
12 h after dark	5.70032	4.91607	6.48457