Well, I did it.
NOAA released their global temperature data for September, so I thought it was time for an update. But I was trying to update the NOAA temperature data graph in a way that would really tell the story. So first I graphed the yearly average global temperature up to last year, but left out this-year-so-far. Then, I figured I’d add an extra point, marked as an asterisk, in red, to emphasize this year’s value (so far). Problem is — it broke the graph:
Dang that pesky global warming.