SAGRAM NOMICAN AIYER
I am afraid I cannot give you a fair answer on that.  One has to look at the tables and get an opinion from a mathematician who will give you a statistical evaluation on the formula itself, because if you notice in his formula, he says "plus-minus 32", a number of factors may be factored into that, you know.  The accuracy of the ruler being used or the calliper being used, to what number of digits he's measured.  So it's a difficult thing to say.  Dr Naidoo would be more precise, because he did the measurements and he would be able to tell you.