diff --git a/schainpy/model/graphics/jroplot_spectra.py b/schainpy/model/graphics/jroplot_spectra.py
index b3b0599..4405e57 100644
--- a/schainpy/model/graphics/jroplot_spectra.py
+++ b/schainpy/model/graphics/jroplot_spectra.py
@@ -63,7 +63,8 @@ class SpectraPlot(Plot):
         else:
             data['noise'] = 10*numpy.log10(dataOut.getNoise()/dataOut.normFactor)
         #data['noise'] = 10*numpy.log10(dataOut.getNoise(ymin_index=26,ymax_index=44)/dataOut.normFactor)
-        meta['xrange'] = (dataOut.getFreqRange(1)/1000., dataOut.getAcfRange(1), dataOut.getVelRange(1))
+        extrapoints = spc.shape[1] % dataOut.nFFTPoints
+        meta['xrange'] = (dataOut.getFreqRange(extrapoints))/1000., dataOut.getAcfRange(extrapoints)), dataOut.getVelRange(extrapoints)))
 
         if self.CODE == 'spc_moments':
             data['moments'] = dataOut.moments