# ICON/BCON Output Files

**URL:** <https://forum.cmascenter.org/t/icon-bcon-output-files/1366>\
**Category:** CMAQ-PREP\
**Created:** [March 13, 2020, 4:41pm UTC](https://forum.cmascenter.org/t/icon-bcon-output-files/1366 "2020-03-13T16:41:41Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![cjcoats](https://avatars.discourse-cdn.com/v4/letter/c/ac8455/32.png) [@cjcoats](https://forum.cmascenter.org/u/cjcoats)\
**Post date:** [March 16, 2020, 2:10pm UTC](https://forum.cmascenter.org/t/icon-bcon-output-files/1366/3 "2020-03-16T14:10:53Z")

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Actually, the simplest test probably uses M3Tools program _m3stat_:

```
setenv FOO <path for file>
<wherever>/$BIN/m3stat FOO DEFAULT

```

and you should get on-screen either a statistics-report for file ${FOO}, or an error-report.  
(where `<wherever>/$BIN/m3stat` gives your installed I/O API base-directory and binary-type)

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