AlnConstants::print()
 TDC unit = 0.78125ns
 X dimension:
  Layer 0, t at coordinate=0 =      0 TDC units, drift velocity linear =        0 mm/TDC unit, quadratic =      0 mm/TDC unit^2
  Layer 1, t at coordinate=0 =     44 TDC units, drift velocity linear =    0.138 mm/TDC unit, quadratic =      0 mm/TDC unit^2
  Layer 2, t at coordinate=0 =     27 TDC units, drift velocity linear =    0.142 mm/TDC unit, quadratic =      0 mm/TDC unit^2
  Layer 3, t at coordinate=0 =     38 TDC units, drift velocity linear =    0.135 mm/TDC unit, quadratic =      0 mm/TDC unit^2
 Y dimension:
  Layer 0, t at coordinate=0 =      0 TDC units, drift velocity linear =        0 mm/TDC unit, quadratic =      0 mm/TDC unit^2
  Layer 1, t at coordinate=0 =    -34 TDC units, drift velocity linear =    0.129 mm/TDC unit, quadratic =      0 mm/TDC unit^2
  Layer 2, t at coordinate=0 =    -20 TDC units, drift velocity linear =    0.137 mm/TDC unit, quadratic =      0 mm/TDC unit^2
  Layer 3, t at coordinate=0 =    -13 TDC units, drift velocity linear =    0.131 mm/TDC unit, quadratic =      0 mm/TDC unit^2