What is the mean pelvic incidence angle for patients diagnosed with Spondylolisthesis in the dataset?

What is the mean pelvic incidence angle for patients diagnosed with Spondylolisthesis in the dataset?: a task in SmolDataEnvs-harbor-train (Harbor dataset). Files (in /home/user/input, no subfolders): - column 3C weka.csv - column 2C weka.csv