Resulting bogus values when changing loop range

The code below loops through an excel file. An example excel file data is as follows 10 0.22 10 0.22 10 0.22 5 0.23 10 0.24 10 0.24 5 0.25 10 0.29

The code loops through starting from 0.22 and if it finds the same second column number then it adds the first column. My code works but as soon as I change the width variable from width = 0.22:0.01:0.29 to 0.22:0.01:0.4 it doesnt calculate some length and returns bogus value 0. I am trying to figure out why so. Any hep would be greatly appreciated. Changing the range for width gives bogus values.

clear
clc
filename = 'C:\Users\vvangapally\Documents\MATLAB\ReadoutSeg.xlsx';
A = xlsread(filename);
%format LONGENG
% Assign Wire_Length to the first column
Wire_length = A(:,1);
% Assign Wire_width to the second column
Wire_width = A(:,2);
% Assign chip area, it changes depending upon the size of the layout you
% are measuring
chip_area = 3600 * 1600;
% width is the spacing function you used to create the dataset
%width = 0.22:0.01:50;
width = 0.22:0.01:0.32;
width = width';
% ntot is the total number of widths
ntot = length(width);
% Assigning length and fraction_of_chip_Area matrices to be all zeros
len = zeros(ntot,1);
%len = cell(ntot,1);
%len = 0;
%fraction_of_chip_area = 0;
fraction_of_chip_area = zeros(ntot,1);
% Loop function to add all the length in one met-to-met spacing else retain
% the original value
for j = 1:length(Wire_width)
    for i = 1:ntot
        if Wire_width(j,1) == width(i,1)
            len(i,1) = len(i,1) + Wire_length(j,1) ;
        else 
            len(i,1) = len(i,1);
        end
        fraction_of_chip_area(i,1) = ((len(i,1)*width(i,1))/chip_area)*100 ;
    end
end
%fraction_of_chip_area = (len * width) / chip_area ;
bar(width, fraction_of_chip_area)
xlabel('Metal to Metal Spacing in um')
ylabel('Fraction of Chip Area (%)')
title('Metal to Metal Spacing vs Fraction of Chip Area')
%hist(fraction_of_chip_area)