ASHRAE 62's Ev value is determined by either the ASHRAE Standard 62 Appendix A (lowest calculated method value of the zone efficiency Evz) or per ASHRAE's Table 6-3 "System Ventilation Efficiency". The Ez method deteremined from these methods are used as a system Value is determined from the space airflow fractions... However, the LEED Online "Ventilation Rate Procedure" Table appears to divide HVAC units into spaces covered by the unit and the Ez value for each space is required. Should the values entered in this table be entered by each space (each having it's own Ez), or should the calculated system Ez value be used for each space?