Average tariff

Average tariff is a tax levied by a government on imports or occasionally exports for purposes of protection, support of the balance of payments, or the raising of revenue a method of charging for the supply of services, esp public services, such as gas and electricity.(Collins dictionary)
Generally speaking, average tariff rates are less than 20 percent in most countries, although they are often quite a bit higher for agricultural commodities. In the most developed countries, average tariffs are less than 10 percent and often less than 5 percent.(World Bank)

Sources:

TARIFF definition and meaning /Collins English Dictionary. (2023). In Collins Dictionaries. https://www.collinsdictionary.com/dictionary/english/tariff

Avarage tariff/ World Bank Open Data. (2023). https://data.worldbank.org/indicator/TM.TAX.MRCH.WM.AR.ZS