condition mean min max 4 h after light 10.262997 9.918354 10.60764 8 h after light 10.566977000000001 10.347319 10.786635 12 h after light 9.771081500000001 9.265681 10.276482 4 h after dark 9.283355 8.49796 10.06875 8 h after dark 9.766399 9.766399 9.766399 12 h after dark 8.075233 8.075233 8.075233