condition	mean	min	max
4 h after light	7.89654	7.48081	8.31227
8 h after light	13.75175	12.6001	14.9034
12 h after light	18.1702	17.8716	18.4688
4 h after dark	14.477266666666667	13.255	15.6535
8 h after dark	11.495833333333334	10.6755	12.0868
12 h after dark	10.71379	9.84447	11.363