Although normally you wish to evaluate your own data (I think so), here you find some sample data and pointers, with the only intention to help you to test the formats known by EWA. The detailed description of the formats is described in the appendix of the documentation. The files are stored in compressed form, to uncompress them you will need something like Zip or  WinZip .

Tabular
• Download a set of standard spectra from NIST

VAMAS Standard Data Transfer File Format
• VAMAS format Specimen Files
• Some local VAMAS sample data
• Validate your VAMAS data file format (if EWA fails to read them)

ATOMKI in-house formats

• Some local ATOMKI sample data

Many more
• Sublist