Castillo, E.R., Castillo, C.K. and Villarin, J.T. 2005. Comparative analysis of statistical reduction and classification methods for Philippine rainfall. Proceedings of the Samahang Pisika ng Pilipinas, 23(1), SPP-2005-1G-04. URL: https://proceedings.spp-online.org/article/view/SPP-2005-1G-04.