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<DIV>I am concerned with how the quality check of barometric data is performed. Attached is the Barometer Quality Check for my station, AS519, for the date 4 Feb 2007. </DIV>
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<DIV>The red, analysis line shows significant fluctuation within hourly intervals, a condition that appears unrealistic. This condition starts about 0900 and continues through the remainder of the analysis period. The blue line, representing the observed data form my station appears as a more normal pressure trace.</DIV>
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<DIV>Is there documentation that details how the quality analysis is performed. My experience with data analysis suggests to me that one of the analysis stations is either intermittent or not accurately reporting.</DIV>
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<DIV>Has anyone else experienced this in their quality reports?? </DIV>
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<DIV>John. WB7TJI (AS519)</DIV></body></html>