Native Contrast is expressed as a ratio of the minimum of luminance levels of blacks and the maximum of luminance levels of whites that are displayed and measured at the same time on the same screen in a dark room on a plasma panel module. Panasonic's Native Contrast measurement for 2010 plasma television models expresses the maximum contrast ratio of the plasma panel measured at the time of manufacture in a vivid mode using a static white rectangular pattern with 4% area size and does not express a contrast ratio measured during ordinary viewing conditions by a consumer. Unlike previous models, Pre-Discharges do not occur for the images used in the 2010 model measurements, so the results should not be compared to contrast ratios reported for earlier year Panasonic models