0.67  250.
 0.60  500.
 0.51  750.
 0.51 1000.
 0.48 1250.
 0.45 1500.
 0.45 1750.
 0.48 2000.
 0.49 2250.
 0.52 2500.
 0.55 2750.
 0.57 3000.
 0.60 3250.
 0.59 3500.
 0.60 3600.
 0.61 3700.
 0.62 3800.
 0.63 3900.
 0.62 4000.
 0.62 4100.
 0.61 4200.
 0.62 4300.
 0.63 4400.
 0.63 4530.