Unreasonable illuminance and DF values using Radiance

[Anonymous]

I am using Radiance (Radtool) to generate illuminance and daylight factor values and importing it into a grid in Ecotect. The values that Radiance is generating are unreasonably (and impossibly) large. The interior illuminance levels in a simple rectangular room with a window on a sunny day range between 1800 - 48,000 lux and DF reach 20,000%!

Where are these values coming from? How can I get more reasonable values?

Attached is the ecotect model of the simple room with window showing the illuminance values generated from Radiance.

Thanks.

[yunpeng]

I can not find DF results in your model, andI think the illuminance results are right.
But you should make grid smaller.

[Anonymous]

I do not think that illuminance values up to 48,000 lux are reasonable.

I have attached the model showing daylight factors with a more refined grid. Values for DF range from 720% to 24,000% which is physically impossible. Any suggestions?

[yunpeng]

I think you got the wrong sky, DF can only be used for overcast sky.
I don`t know why do you think the illuminance results are unreasonable, I think the results are within normal range.