Kestrel 17m polar data, low wing loading, up to 100 kts, no data at higher speeds
1,10,84,2   change the first number to 0,1, or 2 if you want different fit weighting, commas must follow numbers immediately (leave a space after the last number)
84,0.63
90,0.65
100,0.70
110,0.80 
120,0.94
130,1.10
140,1.25
150,1.4
160,1.66
170,1.9
180,2.28    
Program does the rest



V polar fit 3 calculated coefficients-high order first
1.411E-004
-2.064E-002
1.366E+000
calculated coefficients-end
Fit Results:
speed   sink   L/D
 74.1,  0.61,  33.7
 83.3,  0.63,  37.0
 92.6,  0.66,  38.7
101.9,  0.73,  38.9
111.1,  0.81,  37.9
120.4,  0.93,  36.1
129.6,  1.06,  33.9
138.9,  1.22,  31.6
148.2,  1.41,  29.3
157.4,  1.61,  27.1
166.7,  1.85,  25.1
175.9,  2.10,  23.2
185.2,  2.38,  21.6
194.5,  2.69,  20.1
203.7,  3.02,  18.8
213.0,  3.37,  17.6
222.2,  3.75,  16.5
231.5,  4.15,  15.5
240.8,  4.58,  14.6
250.0,  5.03,  13.8
259.3,  5.50,  13.1

       spdToFly[km/h]
sink  wind=0 wind=10 wind=20 wind=-15
  0.0   84.0   84.0   84.0   84.0
  0.3   84.0   86.5   90.3   84.0
  0.5   92.8   96.5  101.4   88.8
  0.8  100.4  104.8  110.4   95.3
  1.0  107.2  112.1  118.1  101.4
  1.3  113.3  118.6  125.0  107.0
  1.5  119.1  124.7  131.2  112.2
  1.8  124.4  130.2  137.0  117.2
  2.1  129.5  135.5  142.4  121.9
  2.3  134.2  140.4  147.4  126.4
  2.6  138.8  145.1  152.2  130.7
  2.8  143.2  149.6  156.8  134.8
  3.1  147.4  153.9  161.2  138.8
  3.3  151.4  158.0  165.4  142.7
  3.6  155.3  162.0  169.5  146.4
  3.9  159.1  165.9  173.4  150.0
  4.1  162.7  169.6  177.2  153.6
  4.4  166.3  173.3  180.9  157.0
  4.6  169.8  176.8  184.4  160.3
  4.9  173.1  180.2  187.9  163.6
  5.1  176.4  183.6  191.3  166.8
  5.4  179.7  186.8  194.6  169.9
  5.7  182.8  190.0  197.8  173.0
  5.9  185.9  193.2  201.0  176.0
  6.2  188.9  196.2  204.1  178.9
  6.4  191.9  199.2  207.1  181.8
  6.7  194.8  202.2  210.1  184.7
  6.9  197.6  205.1  213.0  187.5
  7.2  200.4  207.9  215.8  190.2
  7.5  203.2  210.7  218.7  192.9
end results