This data set is extracted from a single experiments on 15 fibroblast cell lines with each array containing over 2000 (mapped) BACs spotted in triplicate discussed in Snijders et al.(2001). Data corresponds to the chromosome 1 of cell line GM03563.
References
Snijders,A.M. et al. (2001) Assembly of microarrays for genome-wide measurement of DNA copy number. Nature Genetics, 29, 263-264.