You should get somthing like this:
The output should be similar to this:
Scaling the data
To automatically scale the data according to the amplitude of the data,
you can use the program   sugain.
To test this run the following job:
segyread tape=001.sgy | segyclean | sugain agc=1 | suxwigb perc=95
Note:
If you are going to use the data for further processing, they should
not be scaled at this stage.
arne@ifjf.uib.no