condition mean min max 0 h after light 0.372986 0.0 0.745972 4 h after light 0.379368 0.0 0.758736 8 h after light 0.7420355 0.379001 1.10507 4 h after dark 0.3671125 0.0 0.734225 8 h after dark 0.7380154999999999 0.366691 1.10934 12 h after dark 0.181861 0.0 0.363722