A spokesman said: “The Wet Bulb Globe Temperature will be the official measurement to determine whether cooling breaks shall be implemented. Should it exceed 32°C (also taking into account additional factors such as the time of day, the amount of cloud cover, wind, humidity and stadium location), the FIFA Venue Medical Officer will recommend cooling breaks to the FIFA General Coordinator and the Match Commissioner. For FIFA the health of the players is always highest priority. One core aspect in defining the kick-off times was the very thorough analysis of the historical climate date in all venues.