I have never shot air pistol silhouette, what are the distances for each of the targets?

From the Rules:

Section H. Range Layout / Target Set-Up
1. A silhouette range consists of a firing line and four different target lines, one for each of the four animals (chicken, pig, turkey, ram). Distances from the firing point to each bank of targets shall be: Air Pistol 10 YD, 12.5 YD, 15 YD, 18 YD, =/- 6 inches.