Phobos midrapidity pseudorapidity density ratios for Cu+Cu 200/19.6 GeV

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200/19.6GeV data - EOct Centrality Method (combined statistical and systematic errors)
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X-Sect	|	Npart	Error	|	Ratio	Error
40-45	|	77.1	6.2	|	2.02	0.15
45-50	|	61.3	6.0	|	1.98	0.16
50-55	|	47.0	5.0	|	1.92	0.17
55-60	|	35.5	4.2	|	1.86	0.17


more central data can be found here:

http://www.bnl.gov/phobos/Publications/Physics/AuAu_19_200_tracklet/200_20_Ratio.txt