Distribution of similarity score values of the sample surrounding the Sun. The lower the similarity score, the more similar is the stellar spectrum to the solar spectrum. The green points have the same meaning as in Fig. 5. Orange points are all the stars within the 75th percentile of distances defined in Fig. 5. The orange horizontal dashed line indicates the 75th percentile of the distribution of similarity scores. Note that the total range of similarity scores is much larger; the figure shows only nearby stars.