306 Neutrino oscillations: a phenomenological overview
Figure 10.9. Two-generation MSW solutions to the solar neutrino problem. The
upper four panels correspond to the following separate fits to data subsets: total
rates (Cl+Ga+K+SK); Super-Kamiokande night–day asymmetryN−D/N+D;
Super-Kamiokande electron energy spectrum with standard hep neutrino flux;
Super-Kamiokande spectrum with enhanced( 20 ×)hepneutrino flux. The two lower
panels show the results of the global fits to all data.