Fix waveform plot time for Reftek data

sohstationviewer/model/reftek/from_rt2ms/core.py

@@ -153,8 +153,8 @@ class Reftek130(obspy_rt130_core.Reftek130):
                         npts = len(sample_data)
 
                     tr = Trace(data=sample_data, header=copy.deepcopy(header))
-                    tr.stats.npts = npts
-                    tr.stats.actual_npts = packets_['number_of_samples'].sum()
+                    tr.stats.npts = packets_['number_of_samples'].sum()
+                    tr.stats.actual_npts = npts
                     # channel number is not included in the EH/ET packet
                     # payload, so add it to stats as well..
                     tr.stats.reftek130['channel_number'] = channel_number