Chemical abundance pattern of our sample of P-rich stars. Dark red stars correspond to the median chemical abundance of the P-rich sample, and gray dots show the median chemical abundance of the background sample. Stars with upper limits were excluded from the median. The red and gray error bars denote the corresponding average line-to-line abundance scatter (typical standard deviation) from Table D.2, which reflects the quality of the measurements. We also provide the star-to-star abundance scatter of the sample as dotted error bars to reflect the spread of abundances. In the case of P, the gray dot indicates the median abundance of the literature values shown in Fig. 5, and the gray error bar shows the mean error of the literature values.