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16-10-200716-10-2007
APPENDIX A
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/APNAVG.nnn - Analog Printout Log
The values should be monitored for power supply stability.
1
08591
1566.80
08691
1555.86
1.
Julian Day (jjjyy)
2.
H.T. voltage
3.
+5V
4.
standard lamp current
Note: For reasons that are not known data is sometimes written to the APOAVG file that should be
in the MIOAVG file.
DTOAVG.nnn/DTNAVG.nnn - Dead Time Log
1
2
04999
41.66
05099
41.69
1.
Julian Day (jjjyy)
2.
dead time for high intensities
3.
dead time for low intensities
FMNAVG.nnn - Focused Moon Average
1
14999
0.3
15099
0.1
1.
Julian Day (jjjyy)
2.
daily mean ozone
3.
standard deviation of daily mean
4.
F Ratio (NO
2
5.
number of good observations
6.
number of total observations.
BREWER DATA FILES
2
3
4
5.17
1.61
5.17
1.61
3
43.375
43.276
2
3
4
+0.0
693.8
+0.0
702.1
NO
ETC)
MKIV OPERATOR'S MANUAL
APPENDIX A BREWER DATA FILES
5
6
3
3
3
3
2
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