Based on the given feature description, LBXGLT is a respondent's oral measurement. To determine the appropriate ranges of values for LBXGLT, we need more information about how it is measured and what it represents.

Assuming LBXGLT represents glucose levels, we can use commonly accepted ranges to determine the appropriate values for each age group. Generally, normal fasting glucose levels are between 70-99 mg/dL for adults and below 100 mg/dL for seniors. However, these ranges may vary depending on the literature and guidelines used.

Based on this information, we can analyze how LBXGLT relates to the target variable, age group. We can assume that high glucose levels might be more common among seniors due to possible age-related conditions such as diabetes. On the other hand, adults may have a wider range of glucose levels, including both normal and abnormal values.

Considering these assumptions, we can now create a dictionary that includes five typical LBXGLT values for each target class: "Adult" and "Senior".

```json
{
	"Adult": [92.5, 87.0, 100.3, 95.6, 78.9],
	"Senior": [105.2, 92.0, 100.8, 98.5, 115.3]
}
```

Please note that these values are just examples and should not be considered as accurate without proper domain knowledge and validation.