This example shows how "inner" and "outer" mutes may be applied
to moved-out data.  The nmo velocity function also causes some weird
looking data because the NMO time goes backwards.

Notice that the ranges are from 182m to over 6000m.  NMO created
some weird affects on the long range traces with velocities:
vtp 1495 4.85 1515 5.0 1555 5.167 2100 5.567 3500 6.567 end

The NMO time actually decreased and the increased, causing some data
to be mirrored.

SIOSEIS process NMO zeroes data when time decreases.

The long ranges are normally muted at long ranges because of NMO
stretch and low signal-to-noise ratio.  e.g.
mute
   xtp 2000 4.8 3000 5.2 6000 8.   end
end

Sometimes the traces close to the ship (small ranges) are noisy
later in time.  An inner (close to the ship) mute may be used. e.g.
smute
   xtp 0 5.5 3000 9 end
end

sioseis << eof
 procs diskin nmo mute smute agc plot end
 diskin
    ipath line23.g.3116.3120 fno 3116 lno 3116
    end
 end
 nmo
    vtp 1495 4.85
        1515 5.0
        1555 5.167
        2100 5.567
        3500 6.567 end
 end
mute
   xtp 2000 4.8 3000 5.2 6000 8.   end
end
smute
   xtp 0 5.5 3000 9 end
end
 plot
    ann range taginc 5
    srpath sunfil nibs 75 nsecs 5 vscale 2.5 def .05 trpin 10
    end
 end
 agc
     winlen .5 end
 end
 end
eof
xloadimage -r 90 sunfil &