Not exact science okay. But a 42% variance is a bit extreme, no? And it's been over a week like this. Honestly wondering if the 0% fee is being hidden. Just realized forgot to mention this is for RavenMiner.com pool.
I didn't concentrate on your numbers as a lot of people come here with different variances so it was an answer for others to consider also.
Don't rely on the Calc sites. I'm sure some pools do some shady shit. But you either create your own pool, solo mine, or find the pool you like and use it.