(a) Allowed regions in the plane obtained from the fit of the reactor neutrino data, without any energy spectra information, to the neutrino hypothesis, with . The best-fit point is indicated by a star. (b) Allowed regions in the plane obtained from the fit of the reactor neutrino data, without ILL-shape information, but with the stringent oscillation constraint of Bugey-3 based on the 40 m/15 m ratios to the neutrino hypothesis, with . The best-fit point is indicated by a star.
