condition	mean	min	max
4 h after light	6.050073333333334	5.9261	6.1664900000000005
8 h after light	5.994653333333333	5.6795599999999995	6.24161
12 h after light	5.988	5.8379900000000005	6.13236
4 h after dark	6.137716666666667	6.0724800000000005	6.1986099999999995
8 h after dark	6.0284933333333335	5.93734	6.1764
12 h after dark	6.067786666666667	5.9374400000000005	6.17929