condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0294855 0.0 0.117942 3 h after dark 0.0 0.0 0.0 6 h after dark 0.062066333333333334 0.0 0.186199 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0