condition	mean	min	max
4 h after light	6.7106200000000005	6.32308	6.9581100000000005
8 h after light	7.062	7.0381100000000005	7.0865
12 h after light	6.472536666666667	6.3949300000000004	6.619339999999999
4 h after dark	7.094596666666667	6.99374	7.29402
8 h after dark	7.509956666666666	7.405639999999999	7.625839999999999
12 h after dark	7.948523333333333	7.74253	8.06162