From prior knowledge, it is known that high plasma glucose concentration is associated with diabetes. However, there is no specific threshold that indicates whether a person has diabetes or not. Generally, fasting plasma glucose levels below 100 mg/dL are considered normal, while levels between 100-125 mg/dL may indicate prediabetes. Levels of 126 mg/dL or higher on two separate tests suggest diabetes.

Based on this analysis, the dictionary would look like:

```json
{
    "yes": [150.0, 160.0, 170.0, 180.0, 190.0],
    "no": [90.0, 95.0, 100.0, 105.0, 110.0]
}
```

Please note that the values provided are just examples and should not be considered definitive thresholds. The actual diagnosis of diabetes should be made by a medical professional based on comprehensive assessment and additional diagnostic tests.