Figure 28: Same as Figure 27 but for the expected event number of (left panel) in the SK as a function of the time. The solid line (red line) and the the dotted line (blue line) are for the polar and the equatorial directions, respectively. The supernova is assumed to be located at the distance of 10 kpc. The error bars represent the 1 statistical errors only. Right panel is for the ratio of high-to-low-energy events which can be a useful quantity to characterize the change (dip in the right panel) of neutrino signals by the shock effect (see  for details).