Just a side show from the CAA... From this
NOTAL about winter operations on runways...Para 6
CAA policy is that Continuous Friction Measuring Equipment (CFME) should not be used where snow/slush conditions are present, as readings on wet snow and slush are unreliable from existing equipment; there is no correlation between CFME readings and aircraft braking performance. Compacted snow and ice can be assessed for a level of grip and aircraft flight manuals contain performance computations that use such readings. To date, no evidence has been presented that these conditions were encountered last winter, and they are rarely experienced in the United Kingdom. Therefore, the focus of attention should be on wet or loose contamination, which should include assessment and reporting followed by, where possible, clearance of contaminants and return to service.
So clearly there was no ice on the runway at PIK.... CAA... Aghhh