| Variable | Description |
| $call | Station callsign. |
| $lat | Latitude of station in degrees. |
| $lon | Longitude of station in degrees. |
| $lat_min | Latitude of station in degrees and minutes. |
| $lon_min | Longitude of station in degrees and minutes. |
| $symbol_overlay | Symbol overlay. |
| $symbol | Symbol. |
| $speed | Speed of the station in MPH. |
| $speed_kph | Speed of the station in KPH. |
| $speed_knots | Speed of the station in knots. |
| $dir | Direction of the station as a string. (Example: NNW) |
| $dir_deg | Direction of the station in degrees. |
| $alt | Altitude of the station in feet. |
| $alt_m | Altitude of the station in meters. |
| $street_map | URL to station plotted on a street level map. |
| $city_map | URL to station plotted on a city/town level map. |
| $county_map | URL to station plotted on a county level map. |
| $regional_map | URL to station plotted on a regional level map. |
| $loc | Nearest location. |
| $state | State of the nearest location. |
| $country | Country of the nearest location. |
| $dist | Distance from the nearest location, in miles. |
| $dir_loc | Direction from the nearest location. |
| $age_days | Number of days since this packet was received. |
| $age_days_pad | Number of days since this packet was received, padded to two digits. |
| $age_hours | Number of hours since this packet was received. |
| $age_hours_pad | Number of hours since this packet was received, padded to two digits. |
| $age_min | Number of minutes since this packet was received. |
| $age_min_pad | Number of minutes since this packet was received, padded to two digits. |
| $age_sec | Number of seconds since this packet was received. |
| $age_sec_pad | Number of seconds since this packet was received, padded to two digits. |
| $month | Month the packet was received. (UTC) |
| $day | Day the packet was received. (UTC) |
| $year | Year the packet was received. (UTC) |
| $hour | Hour the packet was received. (UTC) |
| $min | Minute the packet was received. (with leading padded zero) |
| $sec | Second the packet was received. (with leading padded zero) |
| $temp_f | Temperature at weather station, in Fahrenheit. |
| $temp_c | Temperature at weather station, in Celsius. |
| $dewpoint_f | Dewpoint at weather station, in Fahrenheit. |
| $dewpoint_c | Dewpoint at weather station, in Celsius. |
| $humidity | Humidity at weather station. |
| $bar_hpa | Barometric pressure at weather station, in hPa. |
| $bar_mmhg | Barometric pressure at weather station, in mmHg. |
| $bar_inhg | Barometric pressure at weather station, in inHg. |
| $luminosity | Luminosity at weather station. |
| $wind_speed | Wind speed at weather station in MPH. |
| $wind_speed_kph | Wind speed at weather station in KPH. |
| $wind_speed_knots | Wind speed at weather station in knots. |
| $wind_dir | Wind direction at weather station. |
| $wind_dir_deg | Wind direction at weather station in degrees. |
| $wind_gust | Wind gust at weather station in MPH. |
| $wind_gust_kph | Wind gust at weather station in KPH. |
| $wind_gust_knots | Wind gust at weather station in knots. |
| $wind_sus | Sustained wind at weather station in MPH. |
| $wind_sus_kph | Sustained wind at weather station in KPH. |
| $wind_sus_knots | Sustained wind at weather station in knots. |
| $rain_hour | Rain over the last hour, in inches. |
| $rain_hour_cm | Rain over the last hour, in centimeters. |
| $rain_today | Rain during the current calendar day, in inches. |
| $rain_today_cm | Rain during the current calendar day, in centimeters. |
| $rain_24hr | Rain over the last 24 hours, in inches. |
| $rain_24hr_cm | Rain over the last 24 hours, in centimeters. |
| $comment | Station comment. |
| $power | Transmit power in watts. |
| $ant_ht | Antenna height in feet. |
| $ant_gain | Antenna gain in dB. |
| $ant_dir | Antenna directivity. |
| $rate | Rate. |