STACK 26: etac
reference orbit: psi' 8-97
dP/P: off
NOTE: runs which have not either energy or luminosity information 
      are not considered in the calculation.
BPMs: saturation kept in account 
                                                      
 [run]     [mean energy]     [sigma beam]     [integ.lumin.]
                MeV              Mev              nb-1    
__________________________________________________________________ 
 2086        2970.117          0.2014           117.35
 2087        2970.131          0.1970            23.16
 2088        2970.139          0.1913           113.78
 2089        2970.147          0.1782           112.49
 2091        2970.168          0.1551           113.56
 2092        2970.168          0.1551            61.71
__________________________________________________________________

 for this STACK: 1 nominal point(s)

[Nominal     [Weighted        [Weighted         [total
 energy]    mean energy]     sigma beam]     integ.lumin.]
   MeV          MeV              Mev              nb-1    

 2969.8       2970.145         0.1793           542.05