This option is available in the premium version of the plugin.
This premium style has been created especially for the average product rating filter. It will display the rating range values with the corresponding amount of stars near each range division.
To assign this style to your product rating filter, choose it from the Filter style select box.
Please pay attention to the custom range values, as well as the Precision option value on the image above. Copy these settings to your own filter to achieve the average ratings divisions of 1-1.99 | 2-2.99 | 3-3.99 | 4-4.99, 5, or edit according to the same pattern as needed.
This style also gives you the option of specifying any custom label of your preference.