0.99  250.
 0.77  500.
 0.70  750.
 0.60 1000.
 0.63 1100.
 0.60 1200.
 0.57 1300.
 0.52 1400.
 0.55 1500.
 0.61 1600.
 0.67 1700.
 0.72 1800.
 0.74 1900.
 0.76 1950.