condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.035835 0.0 0.107505 9 h after light 0.0 0.0 0.0 12 h after light 0.0744195 0.0 0.195133 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0