```json
{
	"low": [1.0, 1.1, 1.2, 1.3, 1.4],
	"high": [1.9, 1.8, 1.7, 1.6, 1.5]
}
```
In this analysis, we assumed that the typical range of values for the "Season" feature is from 1.0 to 2.0. Based on prior knowledge and analysis, we identified that lower values of the "Season" feature (1.0 to 1.4) are associated with low grain yield of the soybean cultivar. On the other hand, higher values of the "Season" feature (1.5 to 1.9) are associated with high grain yield of the soybean cultivar. The dictionary above provides 5 typical float values for each target class, "low" and "high".