Honeybee radiance different results

Hi everyone
I have a problem with honeybee: when I take a grid base simulation each time I find different values in daylight parameters like illuminance values however I didn’t change any parameter. As you see in the pictures all things are fixed but the results are so different is it normal? If this is normal, how can I trust these results, if no how can I fix it?

Hi @MEHRAN.SH . Radiance uses a stochastic sampling method. You can find similar threads on this if you search a little. To start you can see this

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thank you so much,… :pray: