Decomposition of pooling variance for Illumina 1M-Single arrays. Stacked barplots showing the normalized pooling variance estimates, and the breakdown into array and to pool-construction variance for pools allelotyped on the Illumina 1M-Single array. Estimates derived from comparison of replicate pools are labeled "B". Estimates derived from comparison of non-identical pools are labeled "C1" and "C2" (specifying replicate pool). The portion of pooling variance attributed to pool-construction is indicated by hatched bars, and array variance by black or grey bars. Pool size is shown above the barplots.