An absurd 79 percent radiation is based upon an erroneous Stefan-Boltzmann constant

Does anything in nature suggest that the entire surface of the Earth is emitting 390 W/square meter from North Pole to Equator to South Pole? Do animals and people sense it? Yes, on hot asphalt in the summer time in the middle latitudes. Yes, on beach sand. But not on meadows, in forests, on oceans, in the mountains - most of Earth's surfaces.