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[APD] PUR-efficiencies

Hi Daniel,

thanks for answering my questions. There is plenty to add/ask further more to your calculations.  At least let me know which kind of PAS (photosynthesis action spectrum) you were using to weigh bulb efficiency data with. Was it DIN 5031 or the old McCree/Elgersma curve or did you use the latest PAS from India/McCree which dates from 1998? Just as a reminder, Ivo Busko and Wright Huntley have published lots of very knowledgeable info here on APD and thekrib over the years concerning this very issue. 

Thanks again!

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