condition	mean	min	max
4 h after light	7.184396666666666	7.04529	7.31117
8 h after light	7.64282	7.412660000000001	7.990530000000001
12 h after light	7.79986	7.635560000000001	8.05482
4 h after dark	7.239236666666667	7.12617	7.3368
8 h after dark	6.81398	6.6901600000000006	6.99693
12 h after dark	6.814836666666667	6.4936	7.16905