Date Printed: 10/11/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/10/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .032 5.4 20.8 15.3 01:00 .031 5.4 19.3 13.9 02:00 .037 5.2 18.8 13.5 03:00 .035 5.4 15.6 10.2 04:00 .029 5.4 17.3 11.8 05:00 .033 5.2 15.6 10.3 06:00 .028 5.4 13.7 8.2 07:00 .032 5.5 13.4 7.8 08:00 .035 5.0 12.7 7.7 09:00 .037 4.7 11.3 6.5 10:00 .036 4.6 10.5 5.8 11:00 .034 5.1 10.7 5.5 12:00 .034 5.1 10.0 4.9 13:00 .033 5.3 10.4 5.1 14:00 .031 5.7 11.0 5.3 15:00 .031 5.2 9.9 4.6 16:00 .031 3.9 6.9 3.0 17:00 .030 3.8 6.7 2.8 18:00 .029 3.5 6.2 2.7 19:00 .029 3.2 6.2 3.0 20:00 .032 2.9 6.1 3.1 21:00 .038 2.8 6.4 3.5 22:00 .037 B 2.4 5.4 3.0 23:00 C 1.8 3.9 2.0 Average .032 4.4 11.2 6.6 Max .038 5.7 20.8 15.3 Max Hour 21:00 14:00 00:00 00:00 Min .028 1.8 3.9 2.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 10-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 10-Oct-2026 22:50:00 23:50:00 0.068 0.07 -1.39% Date Printed: 10/11/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/10/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .037 .2 3.8 4.1 .3 01:00 .036 .1 4.1 4.2 .3 02:00 .035 .1 3.5 3.6 .3 03:00 .037 .0 2.4 2.5 .3 04:00 .035 .1 2.7 2.8 .2 05:00 .032 .0 2.5 2.6 .2 06:00 .027 .2 3.5 3.7 .1 07:00 .029 .2 3.4 3.6 .2 08:00 .033 .3 3.2 3.5 .4 09:00 .036 .3 2.9 3.2 .4 10:00 .033 .4 3.1 3.5 .3 11:00 .033 .5 2.7 3.2 .3 12:00 .033 .5 2.1 2.6 .2 13:00 .032 .4 2.2 2.7 .2 14:00 .031 .3 2.2 2.5 .2 15:00 .031 .2 C 2.1 C 2.4 C .2 16:00 .031 C C C .2 17:00 .031 .2 C 2.1 C 2.4 C .1 18:00 .030 .1 2.0 2.1 .1 19:00 .031 .1 1.9 2.0 .1 C 20:00 .035 .1 1.6 1.7 C 21:00 .041 .0 .8 .8 .3 C 22:00 .039 C .0 .8 .8 .2 23:00 C .0 .7 .8 .2 Average .033 .1 2.4 2.6 .2 Max .041 .5 4.1 4.2 .4 Max Hour 21:00 12:00 01:00 01:00 09:00 Min .027 .0 .7 .8 .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 10-Oct-2026 15:46:00 16:11:00 69.3 70 -.99% GPT-PS 10-Oct-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 10-Oct-2026 15:46:00 16:38:00 224.8 225 -.07% GPT-PREC 10-Oct-2026 15:46:00 17:08:00 157.2 155 1.45% NO2 GPT-PREC 10-Oct-2026 15:46:00 17:08:00 68.2 70 -2.55% NO2 Precision NO2_Diff PRECDIFF 10-Oct-2026 17:15:00 17:15:05 67.5 68.215 -.93% NOx NOx_Auto NO-PREC 10-Oct-2026 15:46:00 16:11:00 69.2 70 -1.14% Ozone O3_Auto ZERO 10-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 10-Oct-2026 22:50:00 23:50:00 0.069 0.07 -1.72% SO2 SO2_Auto ZERO 10-Oct-2026 19:46:00 20:11:00 0.1 0.0 .12 SPAN 10-Oct-2026 19:46:00 20:36:00 87.3 90 -2.9% PREC 10-Oct-2026 19:46:00 21:01:00 38.6 40 -3.47% Date Printed: 10/11/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/10/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.6 23.1 17.5 01:00 5.6 24.2 18.7 02:00 5.6 21.0 15.4 03:00 5.3 19.4 14.1 04:00 5.3 20.9 15.7 05:00 5.5 14.3 8.9 06:00 6.1 14.9 8.9 07:00 5.9 14.4 8.7 08:00 5.5 14.3 8.9 09:00 4.9 12.1 7.2 10:00 5.5 13.0 7.6 11:00 5.6 11.6 6.1 12:00 5.7 11.9 6.3 13:00 5.8 11.0 5.2 14:00 6.1 11.8 5.7 15:00 5.1 9.0 3.9 16:00 3.8 6.8 3.0 17:00 4.1 7.6 3.4 18:00 3.5 6.2 2.6 19:00 3.4 6.2 2.7 20:00 2.9 5.4 2.5 21:00 3.4 7.6 4.1 22:00 2.5 5.6 2.9 23:00 1.8 3.8 1.9 Average 4.7 12.3 7.5 Max 6.1 24.2 18.7 Max Hour 14:00 01:00 01:00 Min 1.8 3.8 1.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.47% Date Printed: 10/11/2026 01:30 Daily Summary Report Site: Union Cross 10/10/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .039 742.0 64.1 49.0 01:00 .040 742.0 64.1 48.4 02:00 .041 741.4 63.8 47.8 03:00 .041 741.3 63.3 47.7 04:00 .041 741.3 60.8 49.1 05:00 .039 742.0 59.9 49.8 06:00 .032 742.1 57.5 52.0 07:00 .033 741.9 58.2 51.2 08:00 .035 741.8 59.4 50.4 09:00 .038 741.8 59.8 50.4 10:00 .036 742.1 57.8 53.6 11:00 .033 742.0 57.7 55.2 12:00 .031 741.2 58.6 56.7 13:00 .031 740.2 59.8 58.0 14:00 .031 739.6 60.9 59.3 15:00 .031 739.1 60.9 60.2 16:00 .030 738.9 61.2 60.6 17:00 .030 738.9 62.0 61.6 18:00 .031 738.9 62.9 62.8 19:00 .031 738.8 64.5 64.5 20:00 .036 738.8 65.7 65.4 21:00 .040 738.7 65.6 65.1 22:00 .038 C 738.1 66.0 65.8 23:00 C 737.6 66.4 66.4 Average .035 740.4 61.7 56.2 Max .041 742.1 66.4 66.4 Max Hour 04:00 10:00 23:00 23:00 Min .030 737.6 57.5 47.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 10-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 10-Oct-2026 22:50:00 23:50:00 0.07 0.07 .35% 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