Try flying out of Ryiadh Saudi Arabia in July.
48 degrees C with dust in a AC685 over gross.
Book figure was 4,000 feet. I reckon we did 6,000 feet ground run
Like others from OZ we are all taught the effect of temperature on performance. Australia doesn't have too many runways above 3000 feet altitude, but inland temperatures are usually between 30 and 40 degrees.