5.11  3.43 0.03  \    #sqrt(s)  <N> d(stat+sys)
   7.07  4.25 0.03   >  bubble chambers
  14.2   6.37 0.06  /
  23.6   8.12 0.08  \
  30.4   9.43 0.18   \
  44.5  10.86 0.16    >  ISR
  52.6  11.55 0.17   /
  62.2  12.25 0.21  /
 200.   21.4  0.45  \
 546.   28.3  0.95   >   UA5
 900.   35.6  0.92  /


Notes: 
The errors given are the quadratically added statistical and systematic errors,
except for the bubble chamber measurements for which only statistical errors 
are given in the references.
The measured values at 200, 546, and at 900 GeV exclude single diffreactive 
dissociation.

References:
J. Benecke, Nucl. Phys. B76, 29 (1976)
W.M. Morse, Phys. Rev. D15, 66 (1977)
A. Breakstone, Phys. Rev. D30, 528 (1984)
G.J. Alner et al. (UA5), Phys. Lett. 167B, 476 (1986)
Ansorge et al. (UA5), Z. Phys. C43, 357 (1989)