ERFC function
    ERFC(LowerBound) ERFC(LowerBound)
  
  LowerBound
        Number or { Number }
      
      The lower bound.
Returns
        Number or { Number }
      
      The complementary Gauss error function.
Returns the complementary Gauss error function calculated between a lower bound and infinity.
Example
      ERFC(0.5)ERFC(0,5)
      
    
    Returns roughly 0.48.