The precious information from Supernova LMC-87A on the neutrino masses and neutrino mixing angles among the flavor states and the mass states

This note relies on a paper published 12 years ago, in which only the result of an analysis of the experimental data of neutrino from SN-87A without any explicit description of the logical steps towards the conclusion is presented. The process was evident, and it was thought that a demonstration was not necessary explicitly. Probably for this reason, the paper was ignored by the majority of physicists. This is the reason to rewrite it now with all the logical steps. Moreover, some possible interpretation of the results have been added.