Table 2
The SZ signal-richness relation fit to a power law of the form 
(see Eq. (3)) for the two mass-richness relations.
| Mass-Richness Relation | Y20 / (10-5 arcmin2) | Statistical | Bootstrap | α | Statistical | Bootstrap |
|
|
||||||
| Johnston et al. (2007) | 6.8 | ± 0.3 | ± 0.4 | 2.07 | ± 0.03 | ± 0.07 |
| Rozo et al. (2009) | 7.4 | ± 0.3 | ± 0.4 | 2.03 | ± 0.03 | ± 0.07 |
Notes. The power law is fit directly to the individual SZ measurements (e.g., Fig. 1). The columns labeled “Statistical” give the uncertainty on the parameters calculated from the SZ measurement errors alone, while those labeled “Bootstrap” give uncertainties found by fitting the power law to a set of bootstrap samples; the latter better represent the full uncertainty of the fits in the presence of intrinsic scatter.
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