ECOWITT Weatherstation integration for Home Assistant

Does anyone know the definition of wind_gust? It seems to be the highest wind value in the last n minutes. But I’m not sure the value of n. Seems to be about 10 minutes. Does anyone know?

Specifically this sensor: https://github.com/garbled1/homeassistant_ecowitt/blob/72434003e7f82eae869b170f1e9e49607b2bf1c9/custom_components/ecowitt/init.py#L276