16
  10.0    350.0
  350.0   600.0
  600.0   670.0
  670.0   880.0
  880.0   970.0
  970.0   1220.0
  1220.0  1430.0
  1430.0  1650.0
  1650.0  1850.0
  1850.0  2260.0
  2260.0  2500.0
  2500.0  2950.0
  2950.0  3300.0
  3300.0  3420.0
  3420.0  3800.0
  3800.0  4000.0