precision on (a) and (b) for the CN2PY and T2HK superbeams, the beta-beam, and the LENF. On the left plot, the empty triangle represents the current precision for Daya Bay, and the star the ultimate attainable precision, assuming as true value the present Daya Bay best fit value. The width of the bands represent the dependence of the error on on and vice versa. For further details, see [46] from which the figure is reproduced.
