condition	mean	min	max
4 h after light	6.100373333333334	6.07251	6.118119999999999
8 h after light	6.02197	5.9546	6.0936699999999995
12 h after light	5.993956666666667	5.88106	6.10471
4 h after dark	6.16016	6.03939	6.24751
8 h after dark	6.184026666666667	6.1679900000000005	6.21404
12 h after dark	6.257243333333333	6.163930000000001	6.34616