How to plot data with very small differences

I have this data:

t = 1:15
Y1 = [1.99998031791996	1.99992023945870	1.99981921018751	1.99967676841284	1.99949246227265	1.99926639580871	1.99899815287861	1.99868750141895	1.99833464599514	1.99793876329308	1.99750049183611	1.99701928683627	1.99649511996620	1.99592851434409	1.99531906441858]
Y2 = [1.99998013911465	1.99991950960070	1.99981753603705	1.99967388705831	1.99948842208052	1.99926102409693	1.99899151220770	1.99867985581043	1.99832594938601	1.99792962177691	1.99749121702464	1.99701033438890	1.99648712446596	1.99592120112878	1.99531367241250]

The difference between Y1 and Y2 is too small, so when I plot them they look same.

How can I plot Y1 and Y2 together and show the differences (I do not want to plot a line shows the differences between them)

This is how the plots look like:

x-axis values from 1:15 and increase by 1

and Y1 and Y2 should be plotted as a line

plot(t,Y1,'-r'); hold on
plot(t,Y2,'-b');

[darova]

YOu can use different markers

plot(t,Y1,'-r'); hold on
plot(t,Y2,'.b');

Answer 1

[Daniel M]

You can try using stem or scatter or playing the axis limits. Or just plot the residuals, which is a pretty standard thing to do.

[Maroco Sc]

I have modified the question.

Could you please give an example for one of these methods.