condition	mean	min	max
4 h after light	6.240773333333333	5.88627	6.57216
8 h after light	6.735526666666667	6.67306	6.854889999999999
12 h after light	6.28306	6.25354	6.30074
4 h after dark	7.18353	7.07852	7.295380000000001
8 h after dark	7.064863333333333	6.89503	7.168880000000001
12 h after dark	7.072703333333333	6.800339999999999	7.2973300000000005