def _get_tau(self, C, mag):
        """
        Returns magnitude dependent inter-event standard deviation (tau)
        (equation 14)
        """
        if mag < 6.5:
            return C["tau1"]
        elif mag < 7.:
            return C["tau1"] + (C["tau2"] - C["tau1"]) * ((mag - 6.5) / 0.5)
        else:
            return C["tau2"]
def _get_tau ( self , C , mag ) : if mag < 6.5 : return C [ "tau1" ] elif mag < 7. : return C [ "tau1" ] + ( C [ "tau2" ] - C [ "tau1" ] ) * ( ( mag - 6.5 ) / 0.5 ) else : return C [ "tau2" ]
Returns magnitude dependent inter-event standard deviation (tau)
        (equation 14)