I´ve been working on a daylight simulation model in Ecotect with the Radiance Plug-in to document IEQc8.1 of LEED Certification.The building is a five floor building, the same floorplan is repeated in each floor. On running the simulation I had positive results getting an average of 100% with daylit spaces until the 3rd floor. Having said that all floors are the same, the results should not change, but the 4th and 5th floor results were different. I didn't modify anything, and I don't know why this happened. I´ve been trying to verify what the problem is. Has anyone had the same problem?