The diagram below shows the secondary reference points that are considered in relation to a primary reference point. In this case, the primary reference point is 28, and the secondary reference points are 16, 29, 40 and 27.
Level A stadium – MAUR evaluation
Reference point 28 on horizontal plane
Reference point 28 – Eh = 2,325 lux
MAUR >0.60
Illuminance values lower than the primary reference point:
The illuminance value at the secondary reference points 16, 29, 40 and 27 on the horizontal plane must be greater than:
2,325 x 0.60 = 1,395 lux.
Illuminance values greater than the primary reference point:
The illuminance value at the secondary reference points 16, 29, 40 and 27 on the horizontal plane must be lower than:
2,325 x 1.40 = 3,255 lux.
MAUR for UEFA elite level A
For a pitch illuminance system to meet the UEFA elite level A lighting requirements, there must be no more than 10 MAUR failures throughout the whole pitch.