
Please, I updated the app, but the error is only in the minimum list, so how can I solve it?
I am guessing local variable rising_readings was an empty list.
So protect the marked block with a list length test.

What does the wave form look like?
I see 5 rising sections in your sample.
How do you know which to use?
Yes the rising I will solve but the problem here is that it cannot calculate the minimum resistance. However, I can get the max resistance.
Also, for one rising section, it still has problem
The R0 calculation gives you the minimum value of the list of (time, resistance) pairs.
In your sample graph, it's lower than the starting resistance.
Isn't that what you want?
Yes the R0 is the starting resistance so I need to get it to calculate the response
That's easy.
It's item 1 of your readings list.
Like this I have to do
Or do you have any suggestions?
No need to use minimum list, yes?
Show the error message in its entirety.
Your use of a temperature as an index into a list in the R0 calculation can't be right.
If you need the resistance at 30 seconds you would need to loop through the readings until you encounter one that's at or past 30 seconds, and grab it.
Break out of the loop.
If you fall off the end of the list, you don't have enough readings.
Hi @ABG
Thank you so much for your help
Actually, I almost completed the project. Now, I can calculate the response time and Rg and Rair.
Please, I have one more question. I need to highlight points on a graph and show the values, like in the below figure.

This block will get you the highlight on a point.

I see no way to add a comment bubble to a highlight, so you would need to fill in some Labels instead.

please check it
it is only changing the colors
In your sample, you showed only one point highlighted.
Yet in your blocks, you asked for them all to be highletted.
Bring up the tool tip for that highlight block, and remind us what it wants for input.