condition mean min max 4 h after light 9.297905 8.5998 9.99601 8 h after light 10.693995000000001 9.25689 12.1311 12 h after light 5.758045 5.22731 6.28878 4 h after dark 3.848185 3.2337 4.46267 8 h after dark 4.560005 4.32779 4.79222 12 h after dark 6.386485 5.97604 6.79693