I have made a corner plot which gives me the values of 3 parameters and their errors.
Is there a way to use these upper and lower errors which are given in corner plots and to put these values in an array or write these values in a file?

I am searching for something like:
x = corner.quantile(parameter value)
dx_up = corner.quantile(upper error)
dx_low = corner.quantile(lower error)