Question: how is rvr reported in metar?
Answer: In a METAR, RVR starts with the runway, coded with the letter "R", followed by the runway number. In this example, "R18R" means RVR is being reported for runway 18 Right. RVR visibility is coded using four digits, representing RVR distance in feet. ... Every 100 feet, up to 1,000 feet.