Interesting and great set of observations, for which I envy you. I have always wanted to observe and construct a light curve, at least on an educational level. Instead, from my town, L’Aquila a small town in the mountains of central Italy, the stars have disappeared. Sloppy lighting, headlights pointed everywhere and air pollution have erased them from the sky. Even in the mountains, the gleam reaches halfway up the sky. When I was a boy, 8-10 stars of the Pleiades could be seen with the naked eye.
Translated with http://www.DeepL.com/Translator (free version)