based on comparision between ratios above. is winfield stock undervalued? what ratios can help in determine that?

Market Cap. Price-Earning Return on Av Long-Term Operating (billions) Ratio 17.4 15.3 22.4 NA NA EquityDebt to Equity 13.5% 7.8% 9.4% 9.0% Margin, 2011 13.5% 16.4% 21.1% -4.8% 4.7% Waste Management Republic Services Waste Connections Progressive Waste Solutions Casella Waste Systems 15.9 10.2 3.7 2.3 0.13 1.5 0.9 0.6 -139.5% 26.2 Winfield 0.32 11.03 3.90% 0.02 10.30% Number of share 15,000,000 net income/eps