The following constants were used for the correction: circularity, b = -0.03; rectangularity, b = -0.01; ellipticity, b = -0.01; form factor, b = 0.17; and SA/OA, b = -0.003.
Las constantes utilizadas para la corrección fueron las siguientes: circularidad, b = -0.03; rectangularidad, b = -0.01; elipticidad, b = -0.01; factor de forma, b = 0.17; SS/SO, b = -0.003.