TELEVISION  P  LEVEL ILLUSTRATIONS:  This chart illustrates the relative levels of P0 to P5 pictures. Actual pictures were taken off the air through an attenuator to illustrate the signal levels and how a signal progressively stronger in 6dB increments appears on a monitor. P0 represents a barely perceptible signal and is the noise floor reference whereas P5 is a snow free picture. Click on the sidebar or title to view the color picture illustrations. THANKS TO ATCO FOR THIS INFORMATION