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. Author manuscript; available in PMC: 2013 Nov 6.
Published in final edited form as: Anal Chem. 2012 Oct 23;84(21):9388–9394. doi: 10.1021/ac302048x

Table 1.

Average rankings of test compounds (n = 35 bins).

MEDIAN AVERAGE STD
Old Bins

No of compounds after pre filters 253
No of compounds after RI filter 195
No of compounds after RI and ECOM50 filters 180
MassFrontier rank after pre filters (22% prec spectra) 6 19 36
MassFrontier rank after RI and ECOM50 filters (22% prec
spectra)
5 13 21
MetFrag peaks rank after RI and ECOM50 filters (22% prec
spectra)
6 18 23
MetFrag score rank after RI and ECOM50 filters (22% prec
spectra)
6 17 31
MetFrag peaks rank after RI and ECOM50 filters (composite
spectra)
7 18 32.1
MetFrag score rank after RI and ECOM50 filters (composite
spectra)
5 15 28.6
MetFrag score rank after RI and ECOM50 filters (intensity
corrected composite spectra)
4 12 15.9

New Bins

No of compounds after pre filters 1635
No of compounds after RI filter 1296
No of compounds after RI and ECOM50 filters 1184
MetFrag peaks rank after pre filters (22% prec
spectra)
28.5 142 228
MetFrag peaks rank after RI and ECOM50 filters (22% prec
spectra)
22 102 157
MetFrag score rank after RI and ECOM50 filters (intensity
corrected composite spectra)
18 56 91

Table 1 summarizes data in Table S6 and S7 of supplementary information. An overview of the effect of different fragmentation algorithms, CID spectra and bin sizes on rankings is given.