8
I was surprised to see so many tubes sealed (it's on its second year but it looks like we missed the window to swap in the replacement tubes I'd made). If you spot any other issues please let me know.
Mark your calendar to swap out the tubes for new ones in early summer to help prevent disease and parasites (it sounds like you're aware of this, but leaving the comment just in case): https://news.vt.edu/articles/2020/03/ext-entomologists-tips-for-installing-and-maintaining-native-bee-houses.html