A city is selected by clicking the mouse pointer on its identity code from the map or its name in the selection table.

A meteogram (also termed "meteorogram" or "metgram") is a 25-hour time series of weather conditions at a station that contains:

1. The Meteogram label shows the three letter identifier of the station followed by the year, month, day / UTC time (YYMMDD/HHHH) for the beginning and ending of the data interval.
2. TMPF and DWPF are the temperature in degrees Fahrenheit on the upper curve (red) and dewpoint (°F) on the lower curve (green), respectively. The plot scale adjusts to the maximum and minimum temperatures in the data set.
3. BRBK is the station model wind report along the lower row of this section. SKYC is total cloud cover.
4. VSBY is the horizontal visibility in statute miles (brown). WSYM, if present, is the symbol for weather conditions that limit visibility if reported visibility is less than 10 mi.
5. PMSL is the atmospheric pressure corrected to mean sea level in millibars plotted on the fourth graph.
6. Date/Time in Z (UTC) is reported below the pressure graph. The most recent time is at the right side of the graph scale.