condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 4 h after dark 0.029133433333333333 0.0 0.0578463 8 h after dark 0.0090611 0.0 0.0271833 12 h after dark 0.0 0.0 0.0