Average files: ???AVG.nnn and OZOAVGYY.nnn
The Brewer is a ‘statistical’ instrument, and instantaneous deviations from the norm are not
uncommon. The purpose of average files is to provide a daily value for a specific measurement or
test result. It is normal to plot the data in average files vs time (days) to observe trends in data and
test results.
APOAVG.nnn - Analog Printout Log
The values should be monitored for power supply stability.
1. Julian Day (dddyy)
2. daily mean ozone
3. standard deviation of daily mean ozone
4. ETC
5. daily mean SO
2
6. standard deviation of daily mean SO
2
.
7. ETC,
8. number of good observations
9. number of total observations.
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