Not nearly as drastic as this one, though 
There was an increase in the amount of ore mined in December over November, which is not accurately reflected in the the December MER (likely due to the issue that caused its delay). This net increase does not include Ice from the Winter Nexus sites.
We do have a full suite of internal tools that produce reports for internal use on a daily basis (the CSM has seen some of the reports if you’d like their verification), such that our game designers can make informed and data driven decisions.