But of these, only the 9 numbers corresponding to conversions from whole numbers of degrees Fahrenheit will be used. What is reported as 4.4 degrees Celsius might actually be 4.2 or 4.3 or 4.5 or 4.6 or 4.7 degrees, not necessarily 4.4. So this makes a sixth element which differs considerably from the international standards. The remaining element, Present Weather, does use most of the international codes such as RA for rain, FG for fog, and GR for hail. This may be the element which most closely resembles the international standard.
Statute miles are an anachronism The use of statute miles in an aviation context is an anachronism.
It is a holdover from the days when most of the air speed indicators in North American aircraft reported the speed in statute miles per hour, and aeronautical charts were drawn at a scale of a whole number of statute miles to the inch. Statute miles do not fit in with anything else in aviation weather. Environment Canada does this even though to get the correct SI units, kilopascals, which are the units used in Canadian public weather reports for many years and which will continue to be used in the future in those reports, it would only be a matter of telling users to insert a decimal point before the second to last digit rather than before the last one.