Date Printed: 8/19/2026 01:30 Daily Summary Report Site: Clemmons Middle 8/18/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .011 6.2 17.9 11.7 01:00 .009 6.3 18.5 12.2 02:00 .010 6.6 21.9 15.3 03:00 .014 7.0 19.6 12.6 04:00 .011 6.9 20.7 13.7 05:00 .006 6.8 22.9 16.0 06:00 .005 7.0 22.4 15.4 07:00 .016 6.4 17.9 11.5 08:00 .027 5.7 13.9 8.2 09:00 .033 B 5.1 11.8 6.7 10:00 .037 5.2 10.8 5.5 11:00 .040 5.2 10.6 5.3 12:00 .043 5.4 9.9 4.5 13:00 .044 5.5 10.6 5.1 14:00 .044 5.5 9.5 4.0 15:00 .044 5.6 10.2 4.6 16:00 .044 5.6 10.2 4.6 17:00 .043 5.8 10.7 4.8 18:00 .035 5.8 11.3 5.4 19:00 .030 6.0 10.9 4.8 20:00 .026 6.5 13.2 6.6 21:00 .020 7.0 14.2 7.1 22:00 .011 C 7.4 15.1 7.7 23:00 C 7.4 15.4 7.9 Average .026 6.1 14.5 8.3 Max .044 7.4 22.9 16.0 Max Hour 16:00 23:00 05:00 05:00 Min .005 5.1 9.5 4.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Aug-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 18-Aug-2026 22:50:00 23:50:00 0.067 0.07 -3.27% Date Printed: 8/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 8/18/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .017 .3 2.7 3.1 .1 01:00 .016 .3 2.7 3.1 .1 02:00 .014 .2 3.0 3.3 .1 03:00 .013 .2 4.1 4.4 .1 04:00 .013 .2 3.6 3.9 .1 05:00 .007 .5 5.9 6.4 .1 06:00 .006 3.0 8.5 11.6 .2 07:00 D 2.4 6.5 9.0 .2 08:00 D 1.1 3.9 5.1 .2 09:00 .039 .7 2.6 3.3 .2 10:00 .041 .4 1.9 2.4 .1 11:00 .045 .3 1.5 1.8 .2 12:00 .046 .3 1.5 1.8 .2 13:00 .047 .3 1.7 2.0 .2 14:00 .048 .3 1.6 1.9 .2 15:00 .049 .2 C 1.7 C 2.0 C .2 16:00 .052 C C C .2 17:00 .048 .2 C 2.5 C 2.7 C .2 18:00 .045 .1 4.0 4.2 .2 19:00 .037 .0 7.7 7.8 .1 C 20:00 .033 .1 9.4 9.5 C 21:00 .026 .2 13.8 14.1 .2 C 22:00 .020 C .3 10.8 11.1 .1 23:00 C .1 2.9 3.0 .1 Average .031 .5 4.5 5.1 .1 Max .052 3.0 13.8 14.1 .2 Max Hour 16:00 06:00 21:00 21:00 21:00 Min .006 .0 1.5 1.8 .1 Count 21 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 18-Aug-2026 15:46:00 16:11:00 65.7 70 -6.05% GPT-PS 18-Aug-2026 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 18-Aug-2026 15:46:00 16:38:00 213.4 225 -5.16% GPT-PREC 18-Aug-2026 15:46:00 17:08:00 149.1 155 -3.76% NO2 GPT-PREC 18-Aug-2026 15:46:00 17:08:00 65.4 70 -6.56% NO2 Precision NO2_Diff PRECDIFF 18-Aug-2026 17:15:00 17:15:05 64.2 65.411 -1.82% NOx NOx_Auto NO-PREC 18-Aug-2026 15:46:00 16:11:00 65.9 70 -5.85% Ozone O3_Auto ZERO 18-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Aug-2026 22:50:00 23:50:00 0.067 0.07 -2.66% SO2 SO2_Auto ZERO 18-Aug-2026 19:46:00 20:11:00 0.1 0.0 .13 SPAN 18-Aug-2026 19:46:00 20:36:00 89.5 90 -.49% PREC 18-Aug-2026 19:46:00 21:01:00 39.4 40 -1.28% Date Printed: 8/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 8/18/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.5 24.5 17.3 01:00 6.7 24.4 17.0 02:00 7.2 27.3 19.4 03:00 7.3 24.9 16.9 04:00 7.3 24.4 16.4 05:00 7.3 24.0 16.1 06:00 7.1 21.8 14.0 07:00 6.3 18.7 11.6 08:00 5.8 16.4 9.8 09:00 5.4 14.9 8.7 10:00 5.1 14.4 8.5 11:00 4.9 11.9 6.3 12:00 5.1 12.2 6.4 13:00 5.3 14.7 8.5 14:00 5.5 12.5 6.1 15:00 5.6 11.8 5.4 16:00 5.6 11.9 5.5 17:00 6.0 13.1 6.3 18:00 5.9 12.1 5.6 19:00 6.6 13.4 6.2 20:00 7.2 14.4 6.6 21:00 8.0 15.3 6.7 22:00 8.1 16.1 7.5 23:00 7.5 13.2 5.2 Average 6.3 17.0 9.9 Max 8.1 27.3 19.4 Max Hour 22:00 02:00 02:00 Min 4.9 11.8 5.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -1.28% Date Printed: 8/19/2026 01:30 Daily Summary Report Site: Union Cross 8/18/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .012 734.2 72.3 71.8 01:00 .013 734.0 72.1 71.6 02:00 .013 733.9 71.8 71.3 03:00 .014 733.8 71.9 70.6 04:00 .011 733.9 71.5 70.3 05:00 .007 734.1 71.3 70.1 06:00 .006 734.6 72.3 70.3 07:00 .015 735.0 75.9 71.2 08:00 .030 735.1 79.6 70.7 09:00 .039 735.2 81.8 70.3 10:00 .041 735.3 83.9 70.0 11:00 .044 735.0 85.6 69.7 12:00 .047 734.7 86.8 69.6 13:00 .048 734.5 87.8 69.6 14:00 .049 734.3 88.3 69.6 15:00 .050 734.1 88.9 69.4 16:00 .051 734.2 88.7 68.4 17:00 .050 734.3 88.7 68.2 18:00 .045 734.1 86.8 68.4 19:00 .041 734.3 83.1 67.3 20:00 .031 734.5 80.3 66.3 21:00 .026 734.9 77.6 65.7 22:00 .019 C 735.4 74.7 66.0 23:00 C 735.6 73.9 65.9 Average .030 734.5 79.8 69.2 Max .051 735.6 88.9 71.8 Max Hour 16:00 23:00 15:00 00:00 Min .006 733.8 71.3 65.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Aug-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Aug-2026 22:50:00 23:50:00 0.069 0.07 -.45% Flags T Out of Control A Arithmetic Error (math calculation error) t Out of Control (Partial) S Site Visit s Site Activity > Some Data Missing + Max Exceeded - Min Exceeded < Logger Invalid ? Suspect a Audit B Bad Status C Calibration c Ceiling Limit D Channel Disabled E Edited e Site Malfunction f Floor Limit H High-High Alarm h High Alarm I Invalidated By Edit J High Rate of Change Exceeded L Low-Low Alarm l Low Alarm M Maintenance m Marked Maint by edit O Overrange o Other P Power Failure p Precision Check Q Quality Assured R Rate of Change Exceeded V Dig Info#1 W Dig Info#2 X Dig Info#3 Y Dig Info#4 Z Dig Info#5 z Zero Adjusted F Boiler Offline j Low Rate of Change Exceeded