condition	mean	min	max
4 h after light	7.80891	7.375039999999999	8.063930000000001
8 h after light	8.07474	8.000160000000001	8.17261
12 h after light	8.268293333333332	8.031189999999999	8.43827
4 h after dark	8.442513333333334	8.10402	8.745410000000001
8 h after dark	8.359353333333333	7.99863	8.653030000000001
12 h after dark	8.205006666666666	7.9728699999999995	8.472380000000001