Why does profitability go up again?

Hi there,
I just noticed whattomine shows +20% compared to yesterday, but the price move only +2% and the network hashrate is up 10%. With this parameters I don't understand why profitability goes up, it should be stable at best.
Explanation anybody?

ZEC per block increased from 3.4 to 3.7, giving the other 10%

block + 10% and network hashrate + 10% = zero profitability increase in my understanding

Sorry, yeah, you're missing 30% not just 10% because the difficulty went up and not down. Maybe they adjusted the variables based on more efficient algorithms like claymore.