Date Printed: 10/25/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/24/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .027 6.3 11.5 5.1 01:00 .024 6.5 12.8 6.3 02:00 .022 6.6 11.9 5.3 03:00 .028 6.9 12.9 6.0 04:00 .024 6.9 12.0 5.1 05:00 .025 7.1 12.9 5.7 06:00 .025 7.1 13.7 6.6 07:00 .027 6.9 14.3 7.4 08:00 .031 6.3 13.0 6.6 09:00 .035 B 5.9 13.2 7.3 10:00 .040 4.9 10.9 5.9 11:00 .042 4.7 11.1 6.4 12:00 .043 4.5 10.7 6.1 13:00 .044 4.1 9.7 5.6 14:00 .044 3.9 9.6 5.6 15:00 .043 3.9 10.6 6.6 16:00 .042 3.9 11.0 7.0 17:00 .039 3.9 10.5 6.5 18:00 .024 4.5 11.3 6.8 19:00 .021 4.9 12.5 7.5 20:00 .021 6.2 13.2 6.9 21:00 .018 5.7 14.9 9.1 22:00 .024 C 4.8 21.2 16.3 23:00 C 4.0 9.0 4.9 Average .031 5.4 12.2 6.7 Max .044 7.1 21.2 16.3 Max Hour 14:00 06:00 22:00 22:00 Min .018 3.9 9.0 4.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 24-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.69% Date Printed: 10/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/24/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .030 .1 3.2 3.3 .1 01:00 .030 .1 3.1 3.3 .1 02:00 .030 .1 2.5 2.7 .1 03:00 .029 .2 2.4 2.7 .1 04:00 .027 .1 2.6 2.7 .1 05:00 .027 .1 2.4 2.6 .1 06:00 .025 .2 2.5 2.7 .1 07:00 .027 .3 2.2 2.6 .0 08:00 .030 .4 1.8 2.2 .1 09:00 .034 .4 1.4 1.8 .1 10:00 .039 .3 1.2 1.5 .1 11:00 .041 .2 1.1 1.3 .1 12:00 .042 .1 .9 1.1 .0 13:00 .043 .1 .9 1.1 .1 14:00 .043 .2 1.0 1.2 .1 15:00 .043 .1 C 1.0 C 1.2 C .1 16:00 .042 C C C .1 17:00 .038 .0 C 2.9 C 3.0 C .1 18:00 .034 .1 3.8 3.9 .1 19:00 .032 .0 3.7 3.7 .1 C 20:00 .030 .1 4.5 4.6 C 21:00 .029 .3 3.6 3.9 .2 C 22:00 .031 C .1 2.3 2.4 .1 23:00 C .0 1.7 1.7 .1 Average .033 .1 2.2 2.4 .0 Max .043 .4 4.5 4.6 .2 Max Hour 15:00 09:00 20:00 20:00 21:00 Min .025 .0 .9 1.1 .0 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 24-Oct-2026 15:46:00 16:11:00 68.6 70 -1.96% GPT-PS 24-Oct-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 24-Oct-2026 15:46:00 16:38:00 223 225 -.88% GPT-PREC 24-Oct-2026 15:46:00 17:08:00 156.3 155 .88% NO2 GPT-PREC 24-Oct-2026 15:46:00 17:08:00 67.2 70 -3.94% NO2 Precision NO2_Diff PRECDIFF 24-Oct-2026 17:15:00 17:15:05 66.6 67.243 -.86% NOx NOx_Auto NO-PREC 24-Oct-2026 15:46:00 16:11:00 68.7 70 -1.85% Ozone O3_Auto ZERO 24-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 24-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3.55% SO2 SO2_Auto ZERO 24-Oct-2026 19:46:00 20:11:00 0 0.0 .02 SPAN 24-Oct-2026 19:46:00 20:36:00 86.5 90 -3.87% PREC 24-Oct-2026 19:46:00 21:01:00 38.3 40 -4.16% Date Printed: 10/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/24/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.4 12.0 6.0 01:00 6.6 12.4 6.3 02:00 6.5 10.6 4.4 03:00 6.7 11.3 4.9 04:00 6.9 12.3 5.8 05:00 6.9 12.1 5.7 06:00 7.0 13.3 6.9 07:00 6.7 12.8 6.5 08:00 6.6 13.0 6.8 09:00 5.6 12.1 6.8 10:00 4.7 11.3 6.8 11:00 4.5 10.9 6.5 12:00 4.1 10.1 6.2 13:00 3.9 10.0 6.2 14:00 3.9 9.5 5.6 15:00 3.9 10.0 6.1 16:00 3.7 10.6 6.9 17:00 3.9 9.9 6.2 18:00 4.2 10.5 6.5 19:00 4.8 10.8 6.2 20:00 4.9 10.2 5.6 21:00 4.8 10.2 5.8 22:00 4.3 9.7 5.7 23:00 3.9 9.0 5.4 Average 5.2 11.0 6.0 Max 7.0 13.3 6.9 Max Hour 06:00 06:00 16:00 Min 3.7 9.0 4.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.16% Date Printed: 10/25/2026 01:30 Daily Summary Report Site: Union Cross 10/24/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 745.6 51.8 43.9 01:00 .029 745.7 49.9 43.9 02:00 .026 745.8 48.8 44.0 03:00 .026 745.9 47.8 44.0 04:00 .026 746.1 46.4 43.6 05:00 .027 746.6 46.1 43.3 06:00 .024 747.0 45.8 43.6 07:00 .024 747.2 46.5 44.0 08:00 .030 747.7 49.9 44.1 09:00 .035 748.1 53.1 43.1 10:00 .039 748.2 55.6 42.2 11:00 .041 748.2 57.1 42.8 12:00 .041 747.6 58.3 43.1 13:00 .042 746.9 59.8 43.5 14:00 .043 746.5 61.0 43.6 15:00 .043 746.4 61.5 43.7 16:00 .042 746.4 61.3 43.5 17:00 .037 746.6 59.3 42.9 18:00 .031 747.0 56.4 42.3 19:00 .031 747.4 54.5 41.7 20:00 .030 747.9 53.3 41.2 21:00 .029 748.0 52.3 40.8 22:00 .035 C 748.1 52.8 40.4 23:00 C 748.2 52.1 40.6 Average .033 747.0 53.3 42.9 Max .043 748.2 61.5 44.1 Max Hour 15:00 23:00 15:00 08:00 Min .024 745.6 45.8 40.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 24-Oct-2026 22:50:00 23:50:00 0.071 0.069 2.9% 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