Kanga, very good post, thank you. I appreciate data post, as yours, and I learn. I noticed the author did not comment on the fact the bees collect and deposit tiny water droplets throughout the brood chamber to maintain humidity or cooling as needed.
Ventilation or sealed which is better? consider the following: location affects, shade vrs sunlight, humidity, height of hive(number of deeps) rain fall, average temp vary by state, Arizona summer 115F or Montana winter minus 35F, even the species of honey bee matters. Lots to consider, I don't there is a one size fits all.
I have sealed telescoping lids and vented double walled plastic lids. I cannot tell which the bees prefer.
Blessings