User name wang xu
Log entry time 11:18:39 on February 23,1999
Entry number 15382
keyword=Helicity check 3
The ratio betwwen N+(event gated by helicity flag plus)/Q+ and N-/Q+ is 0.9995. the inefficiency of time is 0.004489,In efficient of charge is about 0.004506 and inefficiency of event gated by helicity flag is about 0.004506. This perfectly make sense.