ref: 5ebae4747b49d7067cc75919a2b0983fae6a88d7
dir: /data/wild/maps/Route21.asm/
Route21Mons: db 25 ; grass encounter rate db 21, RATTATA db 23, PIDGEY db 30, RATICATE db 23, RATTATA db 21, PIDGEY db 30, PIDGEOTTO db 32, PIDGEOTTO db 28, TANGELA db 30, TANGELA db 32, TANGELA db 5 ; water encounter rate db 5, TENTACOOL db 10, TENTACOOL db 15, TENTACOOL db 5, TENTACOOL db 10, TENTACOOL db 15, TENTACOOL db 20, TENTACOOL db 30, TENTACOOL db 35, TENTACOOL db 40, TENTACOOL