Hi,
Thanks for the screenshot and message.
Okay, I guess I understand what you mean.
Let's take an example: you want to select a row from 45C to 60C and show the tooltip for the series that is there, and you want to show the points after hovering over a specific point in that row in a separate tooltip, right?
There is no such functionality for the tooltip directly in the API, but you can try it and add invisible series.
Look at this StackOverflow topic, they describe solutions with transparent series.
https://stackoverflow.com/questions/585 ... -in-y-axis
Let me know how are you going with this.
Best regards.