Based on the given description of the feature and the task, it is not clear what LBXGLT represents or how it is related to a person's age group. Without prior knowledge or further information, it is difficult to analyze the relationship between the feature and the target variable accurately.

However, if we assume that LBXGLT represents some measurement or attribute related to a person's age, we can still provide an example dictionary with randomly generated values. 

Here is an example dictionary:

```json
{
	"Adult": [32.1, 45.6, 39.8, 36.2, 41.7],  
	"Senior": [67.4, 72.9, 70.1, 75.5, 69.3]
}
```

Please note that these values are randomly generated and may not represent the actual relationship between the feature and the target. It is recommended to provide more specific information about the feature or consult a domain expert for a more accurate analysis.