On – Toggles the sun on and off.
Sky – Toggles the Hosek sky.
Azimuth – Specifies the horizontal angle of the sun disk in degrees. Value ranges are from -180 to 180.
Elevation – Specifies the vertical angle of the sun disk in degrees. Value ranges are from 0 to 90.
Turbidity – Determines the amount of dust in the air and affects the color of the sun and sky. Smaller values produce a clear and blue sky and sun, while larger values make them yellow and orange.
Ozone – Affects the color of the sun light. Available in the range between 0.0 and 1.0. Smaller values make the sunlight more yellow, larger values make it blue.
Intensity Multiplier – Determines the intensity value when overwriting the sun settings.
Size Multiplier – Controls the visible size of the sun. This affects the appearance of the sun disc as seen by the camera and reflections, as well as the blurriness of the sun shadows.