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CALPUFF and Postprocessors

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Table G-23<br />

BACK.DAT Record Structure<br />

Header Record<br />

Record<br />

No.<br />

Variable Type Description Sample<br />

Values<br />

1 CONFACT real Multiplicative factor to convert background<br />

concentrations to g/m 3 , or to convert background<br />

deposition fluxes to g/m 2 /s. For example, CONFACT =<br />

.000001 indicates that the background values are in either<br />

µg/m 3 or µg/m 2 /s.<br />

.000001<br />

Data Records (free format)<br />

Variable<br />

No.<br />

Variable Type Description Sample<br />

Values<br />

1 NYR integer Year for record (YYYY) 1994<br />

2 NJDAY integer Julian Day for record (JJJ) 210<br />

3 NHR integer Hour for record (00-23, time ending) 13<br />

4 XMHBU real Background Concentration/Deposition Flux 32.8<br />

MAR 2006 -- PostProc<br />

G-79

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