PHOBOS experiment Au+Au at 19.6 GeV
Ratio of (dN/deta')/<Npart/2> non-central(35-40%)/central(0-6%)

                    90% C.L.
                    syst.
   eta'     ratio   error (+/-)
   ---      -----   -----------
 -2.94666   0.8538  0.1253
 -2.74666   0.8669  0.1255
 -2.54666   0.8710  0.1247
 -2.34666   0.8659  0.1203
 -2.14666   0.8793  0.1247
 -1.94666   0.8838  0.1234
 -1.74666   0.9021  0.1299
 -1.54666   0.9235  0.1283
 -1.34666   0.9351  0.1348
 -1.14666   0.9826  0.1383
 -0.94666   1.0084  0.1438
 -0.74666   1.0454  0.1522
 -0.54666   1.1181  0.1611
 -0.34666   1.2208  0.1852
 -0.14666   1.3438  0.2155
  0.05334   1.5067  0.3164
  0.25334   1.7414  0.3519
  0.45334   2.1152  0.4048
  0.65334   2.7433  0.5068
  0.85334   3.5119  0.7792