condition	mean	min	max
4 h after light	6.893003333333334	6.65976	7.01616
8 h after light	6.427926666666667	6.39602	6.47506
12 h after light	6.304103333333334	6.1459	6.49233
4 h after dark	6.589636666666667	6.405880000000001	6.728680000000001
8 h after dark	6.51033	6.4236	6.638739999999999
12 h after dark	6.80551	6.64607	6.916289999999999