condition mean min max 4 h after light 16.466120500000002 14.555633 18.376608 8 h after light 16.111524 15.341971 16.881077 12 h after light 17.2926985 17.248873 17.336524 4 h after dark 15.633603 15.341971 15.925235 8 h after dark 15.533299 15.087265 15.979333 12 h after dark 12.544392 12.544392 12.544392