Heat Bar for Accuracy
<p>Is there a javascript chart that looks something like this: <a href="https://i.stack.imgur.com/jA78N.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jA78N.jpg" alt="heat bar"></a>
 that you can place the accuracy of a point on this.  So instead of Black to Red, it would be Red on the ends and green in the middle, and the further it was from the center the less accurate the reading?</p>