What is the average mid-career median salary for Engineering schools in the Northeastern region?

What is the average mid-career median salary for Engineering schools in the Northeastern region?: a task in SmolDataEnvs-harbor-train-sandbox: 📊 SmolDataEnvs: Harbor (train) (Harbor dataset). Files (in /home/user/input, no subfolders): - salaries-by-college-type.csv - salaries-by-region.csv