Hallo Dear @mostapha,
I noticed, by calculating the Daylight Factor in LBT 1.1.0, if I set for the - lw, another value than 0, in the Radiance parameters, I have a null-percent on all sensors.
Being an important parameter in the calculation, I hope you can take a look at the problem.
To simplify, I edit the RADparameter in your basic example:
daylight_factor_Forum.gh (60.8 KB)
Greetings and happy new year Mostapha