I'm so dense... You took various light sources and put them in an integrating sphere and measured output with a spectroradiometer over a bandwidth of 720nm and found the UV output to be 2% *or* radiation at 720nm to 2000nm was 2% of the total. Or???I took a Kessil 360, Gen 3 Radion, 14K Phoneix and 20K Radium (both run on M80) to use an integrating sphere at the Engineering School at the Alma Mater since I cannot afford one to just keep around the home - I mostly wanted to know the radiated watts of each vs the wall-power. The output in radiated watts of the 20K radium over 720nm was 2% of the total. The Phoenix was a bit more at like 3%. Both of the panels were about .4-.5%. The sphere was only 36", so we did not test any T5s.