condition	mean	min	max
4 h after light	8.369826666666667	8.32064	8.39884
8 h after light	7.76435	7.7530399999999995	7.78256
12 h after light	8.048136666666666	7.9897800000000005	8.10586
4 h after dark	7.980873333333333	7.88782	8.062380000000001
8 h after dark	8.21991	7.96316	8.45378
12 h after dark	8.47716	8.39569	8.5644