condition	mean	min	max
4 h after light	8.63517	8.51149	8.81611
8 h after light	8.813460000000001	8.61471	8.93882
12 h after light	8.620610000000001	8.529	8.70761
4 h after dark	8.40544	8.26415	8.48329
8 h after dark	8.321446666666667	8.054680000000001	8.52175
12 h after dark	8.050933333333333	7.933789999999999	8.178939999999999