Ray, don't apologize for the display in degrees F. There are a number of us Yanks in the forum who still think in that format even though the scientific (and the rest of) the world is metric.
While I'm used to doing the conversions back and forth as necessary, still, after spending a 61 year lifetime living in "degrees F," they are the ones I truly "grok." Just as, after running many quarter mile, mile and 2 mile footraces, my legs "grok" those distances, so metric distances have to be converted into the distances my legs understand even though my mind can deal with metric distances without difficulty.
The changeover is occurring in the US, (my niece and nephews ran races measured in meters so that's what their legs understand,) but it has been an unnecessarily slow and therefore more painful and confusing change here, being forced into happening mostly by the scientific community.