LCD power consumtion

  • Good day.
    In the reviews PRAD.de experts include power consumption characteristics. Those of the manufacturer and those, measured by the experts themselves. For example here, in the review of the NEC 20WGX2 the Operation max. was measured 66,7W.
    And I want to ask if this number is the average of a normal users power consumption? Or will it differ if we put the brightness level from 100% to 10-20% (what the most users of this NEC monitor do).