Just heard in the documentary “Secrets of the Universe – The Sun” (recorded today on History Channel) in German (my re-translation):
“At the places where the sun’s magnetic field is most twisted and complex, heat rising from below is enclosed and thus cooled by up to 537 degrees [Celsius]. This creates dark spots on the sun’s surface, the so-called sunspots.”
I don’t think the American original text meant “up to 1000 degrees Fahrenheit” really accurately to a single degree.
And it’s rounded wrong, because 1000°F = 537,7°C.
PS.: Anyone got a haisplitting smiley?