condition	mean	min	max
4 h after light	6.040563333333333	5.929790000000001	6.1103
8 h after light	5.96186	5.54237	6.2555
12 h after light	6.026016666666667	5.59034	6.319
4 h after dark	6.1813899999999995	6.07586	6.24086
8 h after dark	6.100736666666666	5.93384	6.24316
12 h after dark	5.97722	5.84256	6.19033