Analysis of the relationship between ALT_BLOOD and chronic heart failure:

ALT_BLOOD is a measure of Serum Alanine Aminotransferase (AlAT) content, which is an enzyme primarily found in the liver. Elevated levels of ALT in the blood indicate liver damage or disease.

In the context of chronic heart failure, elevated ALT levels may be observed due to liver congestion and impaired liver function, which can occur as a result of chronic heart failure. However, it is important to note that elevated ALT levels can also be caused by other liver diseases or conditions unrelated to heart failure.

To determine the appropriate ranges of values for ALT_BLOOD, we can consider the normal range of ALT levels in healthy individuals, which is typically below 40 U/L for males and below 30 U/L for females.

Based on this information, we can analyze the relationship between ALT_BLOOD and chronic heart failure by comparing the ALT_BLOOD values for patients with and without chronic heart failure.

Dictionary with ALT_BLOOD values for each target class:

```json
{
	"no": [20.5, 18.7, 22.3, 25.6, 19.2],
	"yes": [35.1, 40.2, 37.8, 42.9, 38.5]
}
```

Note: The values provided in the dictionary are just examples and may not be accurate or representative of real data. The actual values would need to be obtained from the dataset or further analysis.