In order to provide Web access to the NCSN waveform before the SEED conversion and instrument response for the NCSN has been completed, the NCEDC implemented EVT_FAST, an interim email-based waveform request system similar to the BREQ_FAST email request system. Users email EVT_FAST requests to the NCEDC and request NCSN waveform data based on the NCSN event id. Initially the NCSN waveform data was converted to either SAC ASCII, SAC binary, or AH format, and placed in the anonymous ftp directory for retrieval by the users. EVT_FAST event waveforms can now also be provided in MiniSEED format, and are now named with their SEED channel names.

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