View Factor has been determined per the Heschone Mahone Group Study "Windows and Offices: A Study of Office Worker Performance and the Indoor Environment," page 47 (see Resources). A component to achieving Exemplary Performance for IEQc8.2 is having 90% of project's regularly occupied spaces achieve a View Factor of 3+. View Factors are assigned 1–5 and are based on Primary View and Break View. See the study for further detail, including a visual depiction of View Factors 1–5.