   A         B
 A(Low)    B(Low)    LOG'S A & B FOR LOWER TABLE ANGLE 
 A(R)      B(R)      LOG'S FOR EXACT ANGLE
 A(High)   B(High)   LOG'S A & B FOR HIGHER TABLE ANGLE

 B(R) = B(High) + ( A(R)-A(High) ) / ( A(Low)-A(High) ) * ( B(Low)-B(High) )

      A(R) =
 - A(High) =
 ---------------------
      A(1) =

    A(Low) =
 - A(High) =
 ---------------------
      A(2) =

    B(Low) =
 - B(High) =
 ---------------------
      B(1) =

     A(1)  =
   / A(2)  =
  --------------------
           =
   * B(1)  =
  --------------------
 + B(High) =
 ---------------------
      B(R) =


