Yes; per the internet archive[1], the data's at least 20 years old. 1. https://web.archive.org/web/20010612184424/http://www.boeing.com/assocproducts/radiation

Yes; per the internet archive[1], the data's at least 20 years old. 1. https://web.archive.org/web/20010612184424/http://www.boeing.com/assocproducts/radiationlab/publications/SEU_at_Ground_Level.pdf https://web.archive.org/web/20010612184424/http://www.boeing...