condition	mean	min	max
4 h after light	7.893319999999999	7.03296	8.75368
8 h after light	6.62298	6.32689	6.91907
12 h after light	6.282855	6.13887	6.42684
4 h after dark	7.084023333333334	6.67244	7.38884
8 h after dark	7.546963333333333	7.09327	7.99444
12 h after dark	7.959066666666667	7.80266	8.07591