condition mean min max 0 h after light 9.8348 0.0 19.6696 4 h after light 4.839645 0.0 9.67929 8 h after light 4.99669 0.0 9.99338 4 h after dark 4.839955 0.0 9.67991 8 h after dark 4.875135 0.0 9.75027 12 h after dark 4.90204 0.0 9.80408