condition mean min max 4 h after light 9.862269 9.306282 10.418256 8 h after light 9.218289 8.460584 9.975994 12 h after light 9.164094500000001 8.720978 9.607211 4 h after dark 8.1141745 7.662599 8.56575 8 h after dark 8.29749 7.874002 8.720978 12 h after dark 9.376504 9.376504 9.376504