How would you code an RVR value of 2400 feet for runway 22 in a METAR report?

The correct coding for a Runway Visual Range (RVR) value of 2400 feet in a METAR report is done using the notation that specifies both the runway identifier and the corresponding RVR value. In this case, "R22" indicates runway 22, and "2400FT" specifies the RVR distance in feet.

The format for reporting RVR in METAR includes the runway designator followed by a slash and then the distance in feet, which is why the correct answer is coded as R22/2400FT. This ensures the information is clear and follows standard aviation reporting practices.

Understanding the coding format is essential for interpreting aviation weather reports accurately, and it helps pilots make informed decisions based on visibility conditions associated with specific runways. The other options presented do not follow the correct format or values for this specific RVR scenario.