This document provides various IT staffing ratios from the STKI 2018 report, including ratios for PC support staff, network staff, storage staff, server support staff, DBA staff, and cybersecurity staff. Ratios provided include things like PC users per support staff, servers per support staff, storage capacity per storage staff, applications supported per DBA, and non-regulated organizations' PC users per cybersecurity staff. All ratios are sourced from the STKI 2018 report.