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r r r r r r r r r r r r r r r r r r r <br /> TABLE202-1 <br /> Windchill Index' <br /> ACTUALTHERMOMETERREADING(°F <br /> 50 40 30 20 10 0 -10 -20 -30 -40 <br /> Wind speed in EQUIVALENTTEMPERATUREM <br /> mph <br /> calm V%l 50 40 30 20 10 0 -10 -20 -30 -40 <br /> 5 48 37 27 16 6 -5 -15 -26 -36 -47 <br /> 10 40 28 16 4 -9 -21 -33 -46 -58 -70 <br /> 15 36 22 9 -5 -18 -36 -45 -58 -72 -85 <br /> 20 32 18 4 -10 -25 -39 -53 -67 -82 -96 <br /> 25 30 16 0 -15 -29 44 -59 -74 -88 -104 <br /> 30 28 13 -2 -18 -33 -48 -63 -79 -94 -109 <br /> 35 27 11 -4 -20 -35 -49 -67 -82 -98 -113 <br /> 40 26 10 -6 -21 -37 -53 -69 -85 -100 -116 <br /> Over 40 mph Little Danger Increasing Danger Great Danger <br /> (little added effect) (for properly clothed person) (Danger from freezing of exposed flesh) <br /> Source: Fundamentals of Industrial Hygiene, Third Edition. Plog,B.A.,Benjamin, G.S.,Kerwin, M.A.,National Safety Council, 1988. <br /> tevised: 11/93 HS-202-4 Woodward-Clyde <br />