@property<EOL><INDENT>def massrich_norm(self):<DEDENT>
return self._massrich_norm<EOL>
Normalization of Mass-Richness relation:

        M200 = norm * (N200 / 20) ^ slope.

        Changes to massrich_norm will propagate to all mass-dependant
        variables. (This will take current n200 values and convert them to
        m200; in order to retain original values of m200, save them in a
        temporary variable and reset them after this change).

        :property: Returns normalization in Msun
        :property type: Quantity
            float, with astropy.units of Msun. Default is 2.7e+13 Msun.
        :setter: Sets normalization in Msun
        :setter type: float (optionally in astropy.units of Msun)