Thanks for the replies. I am talking about the met report. I am aware that a max demonstrated xwind value is not necessarily a limitation, that's why I phrased my sentence differently in the first place (company x-wind limitation); although I would assume that most companies follow the manufacturer's recommendations and implement these recommendations as limits.
I was trying to discover weather for example W/V 210/18G40 and 210/18M40 have got exactly the same meaning. If my assumption in the first paragraph is correct and 'G' & 'M' share the same definition, many airplanes landed that afternoon while blatantly exceeding their xwind limits. So many of them in fact, that my colleague and I were in the hold wondering whether we had missed something and hence this post...