Based on my prior knowledge, it is likely that the amount of time elapsed since the first donation may play a role in determining whether or not a person donates blood again. 

Analyzing the relationship between feature "Time" (months since first donation) and the target variable "Did the person donate blood" (Yes or No):

1. For the target class 'Yes', we can expect that individuals who donated blood in the past would be more likely to donate again within a certain time frame. Therefore, typical values of "Time" for the 'Yes' class can range from relatively short times (e.g., few months) to longer periods (e.g., 6 to 12 months or more).

2. For the target class 'No', individuals who did not donate blood again may have either elapsed a very long time since their first donation or may not have donated again within a specific time frame. Typical values of "Time" for the 'No' class can range from very high values (indicating no subsequent donations) to shorter periods where the individual has not donated again yet.

Based on this analysis, here is the generated dictionary:

```json
{
    "yes": [2.5, 4.0, 5.5, 9.0, 10.5],
    "no": [15.0, 18.5, 21.0, 25.0, 30.5]
}
```

These values are just an example and should be considered as approximate typical values.