@sollinger,
Crosshair labels show the x or y axis values at the current mouse co-ordinates or to the nearest data points. However, you can format the crosshair label using labelFomatter.
If this doesn’t fulfill your requirements, can you kindly create a JSFiddle or provide a live example and brief us further about your requirement so that we can understand your scenario better and help you out?
—-
Manoj Mohan
Team CanvasJS