# Available Parameters

The following list shows the available parameters for operational and aircraft limit sets.

<table data-full-width="true"><thead><tr><th width="289">API_name</th><th width="680">Description</th><th data-hidden>Display Name</th></tr></thead><tbody><tr><td>wind_speed_mean_1h</td><td>The mean wind speed within a 1 hour interval. Available altitude range: 10-20000m</td><td>WindSpeedMean1h</td></tr><tr><td>wind_direction_mean_1h</td><td>The mean wind direction within a 1 hour interval. Available altitude range: 10-20000m</td><td>WindDirectionMean1h</td></tr><tr><td>wind_gust_1h</td><td>The mean wind gusts within a 1 hour interval. Wind gust includes the mean wind. Available altitude range: 10-20000m</td><td>WindGust1h</td></tr><tr><td>precip_1h</td><td>Accumulated precipitation within a 1 hour interval. The following categories are used to classify rainfall intensity: &#x3C; 2.5 mm/h Light rain 2.5-7.6 mm/h Moderate rain > 7.6 mm/h Heavy rain</td><td>Precip1h</td></tr><tr><td>precip_prob_1h</td><td>Probability of rain within a 1 hour interval.</td><td>PrecipProb1h</td></tr><tr><td>outside_air_temperature_mean_1h</td><td>The outside air temperature (OAT). Available altitude range: 2-20000m</td><td>OutsideAirTemperatureMean1h</td></tr><tr><td>cloud_cover_low_perc</td><td>Cloud coverage between 0-2 km above ground level. (0-100 %)</td><td>CloudCoverLowPerc</td></tr><tr><td>cloud_cover_medium_perc</td><td>Cloud coverage between 2-7 km above ground level. (0-100 %)</td><td>CloudCoverMediumPerc</td></tr><tr><td>cloud_cover_high_perc</td><td>Cloud coverage between 7-10 km above ground level. (0-100 %)</td><td>CloudCoverHighPerc</td></tr><tr><td>cloud_cover_total</td><td>The total cloud coverage is the fraction of the sky covered by all the visible clouds. (0-100 %)</td><td>CloudCoverTotal</td></tr><tr><td>cloud_base</td><td>The cloud base gives the lowest altitude of the visible portion of a cloud.</td><td>CloudBase</td></tr><tr><td>cloud_ceiling</td><td>The cloud ceiling is defined as the height of the lowest cloud layer covering more than half of the sky. A value of -666 denotes that there is no ceiling. Still, clouds can be there, covering less than 50% of the sky. Refer to cloud base as parameter.</td><td>CloudCeiling</td></tr><tr><td>visibility</td><td>Visibility on ground.</td><td>Visibility</td></tr><tr><td>dew_point_mean_1h</td><td>Dew point temperature. Available altitude range: 2-20000m</td><td>DewPointMean1h</td></tr><tr><td>relative_humidity_mean_1h</td><td>Relative humidity within a 1 hour interval. Available altitude range: 2-20000m</td><td>RelativeHumidityMean1h</td></tr><tr><td>lifted_index</td><td>The lifted index is the difference between the temperature of the environment and that of an air parcel lifted adiabatically to a given pressure height in the troposphere, usually 500 hPa which is an index for instability in the air mass. The atmosphere at the given height is stable for positive values of the lifted index and unstable for negative values. When the value falls below -2, thunderstorms are anticipated and for lower values, especially those below -6, severe weather is expected.</td><td>LiftedIndex</td></tr><tr><td>cape_index</td><td>The convective available potential energy index (CAPE index) is the amount of energy a parcel of air would have if lifted a certain distance vertically through the atmosphere. Any value greater than 0 J/kg indicates instability and an increasing probability of thunderstorms and hail.</td><td>CapeIndex</td></tr><tr><td>thunderstorm_prob_1h</td><td>Probability of a thunderstorm to occur within a 1 hour interval. (0-100 %)</td><td>ThunderstormProb1h</td></tr><tr><td>gust_factor</td><td>The gust factor is defined as the difference between the peak wind gust of a 1 hour interval and the mean wind speed in the same period of time.  Available altitude range: 10-10000m</td><td>GustFactor</td></tr><tr><td>spread</td><td>Difference between outside air temperature and the dew point temperature. Available altitude range: 2-20000m</td><td>Spread</td></tr><tr><td>general_icing</td><td>Icing conditions were identified based on the analysis of temperature and relative humidity combinations. This method represents a conservative approach since no droplet size or cloud data was considered. At some points, this more conservative approach might lead to overestimations.</td><td>GeneralIcing</td></tr><tr><td>kp_index</td><td>The KP-index gives a quantification of the disturbance of the magnetic field of the earth. Sun storms can disrupt GNSS (GPS) signals causing GNSS receivers to give misleading or wrong information. NOAA provides data for the period of 7 days. The Kp index is a quasi-logarithmic local index ranging from 0 to 9: 0-4 quiet period, 4-5 mild activity 5-9, high intensity storm.</td><td>KPIndex</td></tr><tr><td>icing_potential</td><td>Icing is absolutely critical in aviation and in-flight icing on planes are the cause of multiple near-accidents or even crashes. Consequently, it is crucial for aviation to have reliable icing forecasts predicting the expected occurrence of icing on different altitudes and allowing for early circumnavigation. 0-0.2: No icing, 0.2-0.4: Traces of icing, 0.4-0.6: Light icing, 0.6-0.8: Moderate icing, 0.8-1: Heavy icing.</td><td>IcingPotential</td></tr></tbody></table>