24/02/2012 · After calculation of the intensity, we put all the intensity values making a Cɣ table as per their angular position. The format of Cɣ table is shown above. In this above chart C' is the position of maximum intensity on the table. Three basic planes of intensity are considered on the road surface with respect to one luminaire: Plane 1: C0 o to C180 o along the road. Plane 2: .