How to extract a list in data frame

I have a data frame looks like this where pressTime in column 8 is saved as a nested list.

My goal is to extract this nested list and plot it as a function of time. However, I have been running to trouble in accessing this data.

The data type of this file is "list", but the type of pressTime columns/cells are "integer". Is there any way I can manipulate this or converting it back to an array or a list?

Any help and suggestions will be appreciated.


2 posts were merged into an existing topic: How to access array data nested in a data frame