GetPpmRange[spec,{dt,field,nuc}]

get the ppm values of the spec where dt is the well time in ms, field the field strength in Tesla and nuc the nucleus availible in GyromagneticRatio.

GetPpmRange[spec,dt,field,nuc]

get the ppm values of the spec.

GetPpmRange[spec,dt,gyro]

get the ppm values of the spec.