E50GeV.eps:   a shower by 50 GeV electron.  
              Simulation condition:  The electron is directed to  a depth
              of (735 g/cm2 + 10km) with a zenith angle (cos) of 0.125 at
              that place.  The injection point is at a vertical height,
              100 km.   Particles are trace until their energy becomes
              1 GeV or height becomes 1000 km. The view is in the detector
	      system.
   
