Phobos midrapidity pseudorapidity densities versus centrality.  Cu+Cu at 200 GeV

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200GeV data - EOct Centrality Method (combined statistical and systematic errors)
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X-Sect	|	Npart	Error	|	dN/dEta	Error	|	dN/dEta/(Npt/2)	Error
0-3	|	107.9  	3.1	|	198	15	|	3.66		0.29
3-6	|	100.7	2.9	|	175	13	|	3.48		0.28
6-10	|	90.9	2.7	|	155	12	|	3.42		0.28
10-15	|	79.1	2.6	|	132	10	|	3.33		0.27
15-20	|	67.0	2.7	|	109	8	|	3.26		0.28
20-25	|	56.6	2.9	|	90.9	6.8	|	3.21		0.29
25-30	|	47.5	3.1	|	75.4	5.7	|	3.17		0.32
30-35	|	39.6	3.3	|	62.4	4.7	|	3.15		0.35
35-40	|	32.7	3.3	|	50.3	3.8	|	3.07		0.38
40-45	|	26.6	3.2	|	40.4	3.0	|	3.04		0.42
45-50	|	21.6	3.0	|	32.1	2.4	|	2.97		0.46