What is the temperature of Guiyang summer electric solar panel

The temperature of electric solar panels in summer in Guiyang is 48 degrees. The temperature range for normal operation of the cell: -45°С to 80°С. The temperature of the cell during normal operation is 48±2°С. In STC European Commission Standard 101 it is stated that the temperature at which the cell should be examined is 25 degrees Celsius, the intensity of the light is 1000 watts per square meter, and the spectral AM=1.5.