**6. Use and Interpretation of the Model**

The processing of the three indices is read simultaneously on a star (or radar) diagram that identifies three reference scenarios, three directions, and three uncertain situations for which the model is unable to provide an answer. Situations are defined as uncertain when the model is unable to provide exhaustive indications or when all three indicators share the same value (Figure 2).

**Figure 2.** Situations are defined as uncertain when the model is unable to provide exhaustive indications because: (**a**) the three indices have a maximum value, (**b**) the three indices have a minimum value, and (**c**) the three indices have equal value.
