condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.0 0.0 0.0 8 h after light 0.2440775 0.0 0.488155 4 h after dark 0.121627 0.0 0.243254 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0