Riolu's encounter rate at Iron Island?

[Pecaeme]

I want to shiny hunt Riolu and you can get 10% Riolu with level 49 repel trick on Challenger's Cave. So if anybody knows what's Riolu's encounter rate at Iron Island please let me know.

 

Thanks ^^

Edited May 17, 2020 by Pecaeme

[xxcghjkm]

5%