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Variation of output data from Radiance-measure

I'm actually working with Radiance measure in OpenStudio (V 1.14).

I just realize that if I run the same model, three time for example, there are fluctuations from Illuminance points data in the map.ill file. First, I try different models and different Weather files but I got the same problem.

There is an example of the fluctuation for 3 simulations.

Time    Sim. 1 (Lux)    Sim. 2 (Lux)    Sim. 3 (Lux)    Variation (Lux)
8:00      15981          15907.6          16041.5         133.9
9:00      21595          21754.4           21698          159.4
10:00     24567          24767.6          24721.5         200.6
11:00     21870.1        21983.2          22302.8         432.7
12:00     11636.3         11432           11490.5         204.3
13:00     4564.3           4608            4567.9          43.7
14:00     3273.3          3242.7           3267.2          30.6
15:00     2175.4          2155.4           2178.5          23.1

Since the parameters of the model are the same, is the variation of the results are made by Radiance measure calculations?

Do you have any suggestions?

Variation of output data from Radiance-measure

I'm actually working with Radiance measure in OpenStudio (V 1.14).

I just realize that if I run the same model, three time for example, there are fluctuations from Illuminance points data in the map.ill file. First, I try different models and different Weather files but I got the same problem.

There is an example of the fluctuation for 3 simulations.

Time    Sim. 1 (Lux)    Sim. 2 (Lux)    Sim. 3 (Lux)    Variation (Lux)
8:00      15981          15907.6          16041.5         133.9
9:00      21595          21754.4           21698          159.4
10:00     24567          24767.6          24721.5         200.6
11:00     21870.1        21983.2          22302.8         432.7
12:00     11636.3         11432           11490.5         204.3
13:00     4564.3           4608            4567.9          43.7
14:00     3273.3          3242.7           3267.2          30.6
15:00     2175.4          2155.4           2178.5          23.1

Since the parameters of the model are the same, is the variation of the results are made by Radiance measure calculations?

Do you have any suggestions?

Variation of output data from Radiance-measure

I'm actually working with Radiance measure in OpenStudio (V 1.14).

I just realize that if I run the same model, three time for example, there are fluctuations from Illuminance points data in the map.ill file. First, I try different models and different Weather files but I got the same problem.

There is an example of the fluctuation for 3 simulations.

Time    Sim. 1 (Lux)    Sim. 2 (Lux)    Sim. 3 (Lux)    Variation (Lux)
8:00      15981          15907.6          16041.5         133.9
9:00      21595          21754.4           21698          159.4
10:00     24567          24767.6          24721.5         200.6
11:00     21870.1        21983.2          22302.8         432.7
12:00     11636.3         11432           11490.5         204.3
13:00     4564.3           4608            4567.9          43.7
14:00     3273.3          3242.7           3267.2          30.6
15:00     2175.4          2155.4           2178.5          23.1

Since the parameters of the model are the same, is the variation of the results are made by Radiance measure calculations?

Do you have any suggestions?