def _compute_mean(self, C, mag, r):
        """
        Compute mean value according to equation 30, page 1021.
        """
        mean = (C['c1'] +
                self._compute_term1(C, mag) +
                self._compute_term2(C, mag, r))
        return mean
def _compute_mean ( self , C , mag , r ) : mean = ( C [ 'c1' ] + self . _compute_term1 ( C , mag ) + self . _compute_term2 ( C , mag , r ) ) return mean
Compute mean value according to equation 30, page 1021.