condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.215819 0.212269 0.219369 8 h after light 0.213001 0.0 0.426002 4 h after dark 0.211447 0.0 0.422894 8 h after dark 0.3189515 0.213826 0.424077 12 h after dark 0.2103225 0.0 0.420645