condition	mean	min	max
4 h after light	7.80164	7.75683	7.88638
8 h after light	7.67854	7.62288	7.737419999999999
12 h after light	7.6788533333333335	7.51911	7.76779
4 h after dark	7.71252	7.653919999999999	7.77642
8 h after dark	7.664133333333334	7.508260000000001	7.74883
12 h after dark	7.909796666666667	7.73022	8.07676