Azimuth angle of the sun (0 to 360 degrees).  

phi0 value

 

  • Sun in the South: 0 degrees

  • Sun in the West: 90 degrees

  • Sun in the North: 180 degrees

  • Sun in the East: 270 degrees

For all one-dimensional solvers the absolute azimuth does not matter, but only the relative azimuth phi-phi0.