How is the 'mean' value calculated for mean Daylight Autonomy (DA) in Diva. Is it the average of all the DA values measured at each node point in a grid/space?
Please confirm if these are the approximate steps to calculate:
1. Perform hourly illuminance analysis for occupied hours in a year in a given space.
2. Measure the DA achievable (say above 300 lux) at each node point in the analysis grid in the space
3. Calculate the average of the DA values achieved at each node point

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