Why are you doing that? The cell is blank, BLANK ya hear?! What’s wrong with the pivot table — where do these numbers come from? What do you mean, the range is too large — I just did the same thing five minutes ago! It’s a SCATTERplot, SCATTERPLOT, not a line graph. Come on, you can handle 6000 data points.
GRRRRRRR.
Stupid, inexplicable Excel.