"A", "B", "C" and "D" mean that errors between measurements and simulations are less than 20%, between 20 and 30%, between 30 and 40%, and over 40%, respectively.
"A", "B", "C" y "D" significa que los errores entre las mediciones y simulaciones es menor al 20%, entre 20 y 30%, entre 30 y 40%, y mayor al 40%, respectivamente.