First of all, I'm not a smn and I really don't know that much about the job's intricate details. I know the basics, but not much more.

I am currently engaged in an argument with another player over whether or not shock squall has a set duration (like elegy) or a randomized duration (like stun). I have done some testing myself on a friend's SMN, but I would rather not reveal what my findings were or who my opponent in this argument is because I don't want any bias in the results.

So, if you would be so kind, please tell me your expert opinions, summoners. Does shock squall have a basic duration which can only be unresisted, all-out resisted, 50% resisted, 75% resisted or 87.5% resisted?