I would take these with a grain of salt as, there are other factors, namely human ones in the wait.
Sometimes there are queues that give you a big wait because one or two quizzes are waiting for a specific editor to check them.
I know sometimes one of my categories is on top of the list and it's because a quiz that needs something I cannot assist them with.
If people send quizzes back to us without really fixing them, this takes up more time too.
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I was born under a wandering star.