All of the data that is presented in the figure is provided in the figure file itself, so you don't need the original M-file that generated the figure. You can use MATLAB's various handle functions to get the data. For example,
1. Click on one of the line objects (data traces) in the figure.
2. At the command prompt, type:
h = gco;
This creates a variable "h" with the handle for the currently selected object.
3. Define two new variables x and y as:
x = get(h,'XData');
y = get(h,'YData');
This is now the data for that figure.
Now define a new figure, and plot this data, i.e.:
figure();
subplot(1,2,1);
plot(x,y);
Do this for all of the data traces that you need, making sure to use subplot appropriately.
EDIT: Editted to improve formatting.
