condition	mean	min	max
0 h after light	8.382445	8.08419	8.6807
4 h after light	6.63047	5.79909	7.46185
8 h after light	9.058910000000001	8.22598	9.89184
4 h after dark	8.039805000000001	7.73784	8.34177
8 h after dark	7.16312	6.75152	7.57472
12 h after dark	6.527075	6.06082	6.99333