Date Printed: 7/20/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/19/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .004 6.9 15.9 8.9 01:00 .005 6.8 15.4 8.5 02:00 .010 6.7 13.6 6.9 03:00 .009 6.6 14.5 7.9 04:00 .004 6.6 15.6 9.0 05:00 .002 6.4 14.1 7.7 06:00 .005 6.6 14.5 7.9 07:00 .010 6.8 14.4 7.6 08:00 .020 7.9 16.6 8.7 09:00 .029 B 9.0 20.5 11.4 10:00 .033 9.5 21.2 11.6 11:00 .035 9.4 20.4 11.0 12:00 .036 8.9 20.3 11.4 13:00 .034 8.1 18.2 10.0 14:00 .035 6.8 15.6 8.7 15:00 .035 6.5 15.1 8.5 16:00 .033 6.3 14.8 8.5 17:00 .032 6.8 15.8 9.0 18:00 .031 6.5 15.3 8.8 19:00 .028 6.3 14.2 7.8 20:00 .023 6.1 13.9 7.8 21:00 .018 B 6.1 13.6 7.5 22:00 .013 C 6.5 13.0 6.5 23:00 C 6.8 14.9 8.0 Average .021 7.1 15.8 8.7 Max .036 9.5 21.2 11.6 Max Hour 12:00 10:00 10:00 10:00 Min .002 6.1 13.0 6.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 19-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.95% Date Printed: 7/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/19/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .021 .7 8.1 8.9 .1 01:00 .015 .8 8.5 9.3 .1 02:00 .016 .8 6.3 7.1 .1 03:00 .014 1.3 6.2 7.5 .1 04:00 .013 1.1 5.4 6.6 .1 05:00 .012 .6 5.1 5.8 .1 06:00 .014 1.6 5.0 6.6 .1 07:00 .021 1.2 3.3 4.5 .2 08:00 .028 .8 2.5 3.4 .2 09:00 .031 .7 1.8 2.6 .2 10:00 .033 .7 1.8 2.5 .2 11:00 .036 .6 1.6 2.3 .1 12:00 .037 .6 1.6 2.3 .2 13:00 .038 .5 1.6 2.1 .2 14:00 .037 .5 2.3 2.9 .1 15:00 .034 .5 C 2.4 C 3.0 C .2 16:00 .028 C C C .2 17:00 .023 1.9 C 5.6 C 7.5 C .2 18:00 .027 1.3 4.1 5.4 .2 19:00 .026 .5 3.3 3.9 .2 C 20:00 .020 .5 4.9 5.5 C 21:00 .020 .6 5.4 6.1 .2 C 22:00 .020 C .3 4.8 5.1 .1 23:00 C .3 6.4 6.8 .2 Average .024 .8 4.2 5.1 .1 Max .038 1.9 8.5 9.3 .2 Max Hour 13:00 17:00 01:00 01:00 23:00 Min .012 .3 1.6 2.1 .1 Count 23 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 19-Jul-2026 15:46:00 16:11:00 66.2 70 -5.41% GPT-PS 19-Jul-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 19-Jul-2026 15:46:00 16:38:00 213.9 225 -4.9% GPT-PREC 19-Jul-2026 15:46:00 17:08:00 149 155 -3.82% NO2 GPT-PREC 19-Jul-2026 15:46:00 17:08:00 65.8 70 -5.97% NO2 Precision NO2_Diff PRECDIFF 19-Jul-2026 17:15:00 17:15:05 64.8 65.821 -1.43% NOx NOx_Auto NO-PREC 19-Jul-2026 15:46:00 16:11:00 67 70 -4.16% Ozone O3_Auto ZERO 19-Jul-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 19-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.44% SO2 SO2_Auto ZERO 19-Jul-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 19-Jul-2026 19:46:00 20:36:00 90.3 90 .36% PREC 19-Jul-2026 19:46:00 21:01:00 39.9 40 -.11% Date Printed: 7/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/19/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.5 14.6 7.6 01:00 7.1 15.3 7.8 02:00 7.5 16.6 8.6 03:00 7.4 14.4 6.5 04:00 7.7 15.0 6.8 05:00 7.9 16.0 7.6 06:00 8.4 17.4 8.3 07:00 9.1 22.3 12.3 08:00 9.6 23.5 12.8 09:00 10.0 24.8 13.4 10:00 10.0 23.8 12.4 11:00 9.2 25.2 14.3 12:00 9.0 22.3 11.8 13:00 9.0 21.1 10.6 14:00 9.0 21.7 11.4 15:00 8.9 23.2 13.2 16:00 8.0 18.8 9.8 17:00 7.4 17.2 9.0 18:00 7.7 18.6 10.0 19:00 6.9 16.6 8.9 20:00 7.6 17.1 8.8 21:00 7.1 16.7 9.0 22:00 6.6 14.6 7.4 23:00 6.6 14.6 7.3 Average 8.0 18.8 9.8 Max 10.0 25.2 14.3 Max Hour 10:00 11:00 11:00 Min 6.5 14.4 6.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.11% Date Printed: 7/20/2026 01:30 Daily Summary Report Site: Union Cross 7/19/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .022 734.3 75.0 70.7 01:00 .022 734.1 74.7 70.7 02:00 .022 733.6 74.2 70.8 03:00 .018 733.4 73.5 71.2 04:00 .012 734.0 73.1 71.4 05:00 .009 734.1 73.2 71.5 06:00 .012 734.3 74.7 71.7 07:00 .018 734.5 78.1 71.7 08:00 .028 734.6 81.8 71.9 09:00 .037 734.8 84.9 71.8 10:00 .038 735.0 86.9 72.2 11:00 .040 734.8 87.9 72.5 12:00 .042 734.3 89.5 72.9 13:00 .041 733.8 89.4 73.2 14:00 .039 733.3 89.2 73.0 15:00 .040 733.1 87.7 72.8 16:00 .038 732.9 87.7 72.6 17:00 .035 732.9 86.5 72.8 18:00 .037 733.3 87.5 73.1 19:00 .032 733.8 83.6 73.5 20:00 .028 734.0 81.3 72.9 21:00 .026 734.2 79.6 72.1 22:00 .019 C 734.6 78.9 72.2 23:00 C 734.7 78.7 72.2 Average .028 734.0 81.5 72.1 Max .042 735.0 89.5 73.5 Max Hour 12:00 10:00 12:00 19:00 Min .009 732.9 73.1 70.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Jul-2026 22:50:00 23:50:00 0.069 0.07 -.95% 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