I just added Zcash to slush - and it looks like I totally botched the block table. So yes, ignore this week's slush data till I figure that out. Sorry bout that! The cost of progress I guess.
I have slush fixed and was totally skipping the coin in the calculation. Current Weekly CDT is .00010875 instead of .01BTC per Day per Th/s. Oh how I wish we were at those days. Mine On!