re: Not the point....
The worry is over events happening near human outposts not the energy levels. An explosion with the equivalent energy of 10 kg of TNT just 5 m from you could be very bad if you're in a pressurized environment in a vacuum.
Just as they had to worry about space debris and calculate how much energy to protect against at ISS they will need do the same for the Lunar surface and later Mars.
We need more data and that is why I suggest a Lunar Long Duration Exposure Facility (LLDEF).