Fig. 2.

File size, read and write time compared with standard mzML. A, Standard box plot of file size relative to mzML for 7 data formats. B, C, log₂ write time B, and read time C, subtracted by log₂ mzML write and read time, respectively, for the 10 test files and seven data formats. Test files are sorted in descending mzML size, and dots represent measurements on individual data files on one of two SSD-hard drive equipped computers. Writing of vendor formats could not be tested with this setup and is thus missing in B. Missing read times are because of errors in execution (mzML.gz for file 5 and mz5zlib for file 6) as discussed in the supplementary material, where also global statistics for all compression schemes (supplemental Table S7) and absolute timing figures (supplemental Figs. S5, S6) are provided.