condition	mean	min	max
4 h after light	5.875423333333333	5.7612	5.94457
8 h after light	5.748046666666667	5.62495	5.98444
12 h after light	6.1544799999999995	6.00235	6.26115
4 h after dark	5.93987	5.5513699999999995	6.2754900000000005
8 h after dark	5.72691	5.33643	6.04387
12 h after dark	5.833903333333334	5.60389	6.03153