Relative change in the statistical mean values of the PPY that results from the inclusion of planets that are observed to transit only once. Results are presented for the HSU19 planet occurrence rate and the 2+2 (solid) or the 3+1 (dashed) mission scenarios at BOL for Jupiters (J, yellow), Neptunes (N, blue), Super-Earths (sE/mN, brown), Earths (E, green), and Sub-Earths (subE, gray).