Add an explanation for the scatter plots

[glindsay65]

The information conveyed in the scatter plots may not be immediately apparent.
A guide or explanation might be useful.

Ideas:

• A verbal explanation for each quadrant as a hover tool tip.
  • Maybe a way to turn this off and on.
  • (time out to off in 60 seconds?)
• A smaller grid with quadrants numbered and an explanation for each number below.
• ?

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  3  |  4  
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  1  |  2  

1. It's been awhile, but I can ramp up quickly.
2. New things I'm dabbling with. Always learning.
3. Still strong, even after all this time.
4. Fresh and strong.