Inconsistency between visibility and CMV, a converted meteorological visibility
Not sure if you're interested or not but I stumbled across this article when proposing changes to Low Visibility Operations at my unit...
http://www.icao.int/safety/meteorology/amofsg/amofsg%20meeting%20material/amofsg.10.sn.011.5.en.pdf
(Sorry, not sure how to post a link from my iPad!)