Selecting a range of X values from an array

I have an .xlsx containing an array of X_values versus 6 columns of Y_ values. The X_values range from 500 to 800 units. I would like to select X_values between 630 to 700 units, and plot X_ vs Y_ for 6 different Y_ columns. I am using the following:

>> data = table2array(X_Y);

>> ind = find(data(:,1)>630);

>> x = data(ind, 1);

>> y = data(ind, 2);

>> f = fit(x,y,'gauss4');

>> figure, plot(f,x,y)

But this way I could select only the lower bound.

Answer 1

[the cyclist]

 ind = find(data(:,1)>630 & data(:,1)<700);