NPN DAILY QUALITY CONTROL MESSAGE (PAGE 1 OF 1)
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*16-MAY-1997* SLP * POT TEMP * DEW PNT * DD * FF *
* 00-23 UTC * (MB) * (DEG F) * (DEG F) * (DEG) * (KNTS) *
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* TOTAL OBS * 336 * 336 * 301 * 336 * 336 *
* QST OBS * 0 * 0 * 11 * 0 * 0 *
*PERCENT QST* 0.00 * 0.00 * 3.65 * 0.00 * 0.00 *
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* PRCO2 * * *21/-20/ 85* * *
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ERROR= ANALYSIS-OBSERVATION RMS ERROR/MEAN ERROR/PERCENT QST
Daily QC message for NOAA Profiler Network (NPN) surface stations on 16 May 1997. The message shows PRCO2 (Purcell, OK) is reporting bad dewpoint temperature observations 85% of the time. The rms error for the station is also identical to the absolute value of the mean error, an indication that a persistent bias exists in the observations. The fact that the error is negative further indicates that the observations are biased high.