condition	mean	min	max
4 h after light	6.589946666666667	6.50249	6.731160000000001
8 h after light	6.57227	6.4484699999999995	6.7234
12 h after light	6.36345	6.25605	6.43749
4 h after dark	6.32367	6.18645	6.47878
8 h after dark	6.502276666666667	6.23082	6.7262
12 h after dark	6.635366666666667	6.60848	6.6688600000000005