Date Printed: 6/25/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/24/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .020 4.7 9.8 5.1 01:00 .018 4.9 10.9 6.0 02:00 .016 5.0 10.9 5.8 03:00 .012 5.4 14.6 9.1 04:00 .009 5.4 13.7 8.2 05:00 .006 5.6 10.8 5.1 06:00 .010 5.5 11.3 5.7 07:00 .016 D 5.8 12.5 6.6 08:00 B 4.7 10.5 5.8 09:00 D 4.3 10.4 6.1 10:00 .040 4.2 9.3 5.1 11:00 .042 4.0 8.3 4.2 12:00 .044 3.8 8.3 4.4 13:00 .047 4.5 9.5 5.0 14:00 .047 4.7 9.5 4.8 15:00 .048 4.7 9.9 5.1 16:00 .048 4.6 9.4 4.8 17:00 .049 4.2 10.7 6.4 18:00 .044 3.9 9.3 5.4 19:00 .037 4.1 11.8 7.7 20:00 .036 4.6 11.8 7.1 21:00 .025 6.0 27.2 21.2 22:00 .019 C 5.6 15.9 10.2 23:00 C 5.5 13.1 7.5 Average .030 4.8 11.6 6.7 Max .049 6.0 27.2 21.2 Max Hour 17:00 21:00 21:00 21:00 Min .006 3.8 8.3 4.2 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 24-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.8% Date Printed: 6/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/24/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .027 .1 5.6 5.7 -.5 01:00 .026 .1 5.7 5.9 -.6 02:00 .022 .2 8.5 8.7 -.5 03:00 .023 .2 4.9 5.1 -.6 04:00 .019 .2 7.1 7.4 -.6 05:00 .010 1.8 13.6 15.5 -.5 06:00 .015 4.9 B 13.0 B 18.0 B -.5 07:00 .028 B B B -.5 08:00 .036 B B B -.5 09:00 .039 B B B -.3 10:00 .041 B B B -.3 11:00 .044 .3 1.4 1.7 -.3 12:00 .047 .2 1.5 1.7 -.4 13:00 .050 .3 1.8 2.1 -.4 14:00 .055 .3 2.1 2.4 -.4 15:00 .056 .2 C 2.4 C 2.7 C -.4 16:00 .050 C C C -.5 17:00 .047 .3 C 2.3 C 2.7 C -.5 18:00 .042 .3 3.2 3.5 -.5 19:00 .040 .1 4.4 4.5 -.5 C 20:00 .029 .2 10.4 10.6 C 21:00 .020 .3 14.1 14.5 -.5 C 22:00 .012 C .4 14.9 15.3 -.5 23:00 C 1.0 13.3 14.4 -.5 Average .033 .6 6.8 7.4 -.4 Max .056 4.9 14.9 18.0 -.3 Max Hour 15:00 06:00 22:00 06:00 11:00 Min .010 .1 1.4 1.7 -.6 Count 23 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 24-Jun-2026 15:46:00 16:11:00 66.4 70 -5% GPT-PS 24-Jun-2026 15:46:00 16:18:00 0.5 0.0 .5 GPTZ 24-Jun-2026 15:46:00 16:38:00 214.3 225 -4.71% GPT-PREC 24-Jun-2026 15:46:00 17:08:00 149.6 155 -3.46% NO2 GPT-PREC 24-Jun-2026 15:46:00 17:08:00 65.1 70 -6.88% NO2 Precision NO2_Diff PRECDIFF 24-Jun-2026 17:15:00 17:15:05 64.7 65.185 -.67% NOx NOx_Auto NO-PREC 24-Jun-2026 15:46:00 16:11:00 66.2 70 -5.4% Ozone O3_Auto ZERO 24-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 24-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.28% SO2 SO2_Auto ZERO 24-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.66 SPAN 24-Jun-2026 19:46:00 20:36:00 87.2 90 -3.1% PREC 24-Jun-2026 19:46:00 21:01:00 38 40 -4.92% Date Printed: 6/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/24/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.4 13.0 7.5 01:00 6.0 13.8 7.7 02:00 7.8 15.1 7.3 03:00 7.3 12.4 5.1 04:00 6.2 12.7 6.5 05:00 6.0 11.5 5.4 06:00 8.6 21.1 12.2 07:00 6.5 18.1 11.3 08:00 4.3 11.9 7.3 09:00 4.0 11.4 7.0 10:00 4.0 9.7 5.3 11:00 4.2 P 9.9 P 5.3 P 12:00 4.2 10.7 6.1 13:00 4.0 11.5 7.0 14:00 4.5 10.9 5.9 15:00 5.0 12.0 6.4 16:00 4.6 11.0 5.9 17:00 4.3 9.1 4.4 18:00 3.9 8.7 4.5 19:00 3.3 7.9 4.3 20:00 4.1 9.5 5.1 21:00 5.3 12.9 7.4 22:00 6.9 13.5 6.4 23:00 6.6 13.2 6.5 Average 5.2 12.1 6.5 Max 8.6 21.1 12.2 Max Hour 06:00 06:00 06:00 Min 3.3 7.9 4.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.92% Date Printed: 6/25/2026 01:30 Daily Summary Report Site: Union Cross 6/24/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .032 737.9 66.5 53.6 01:00 .029 737.9 64.6 53.4 02:00 .028 737.7 63.6 53.2 03:00 .024 737.6 62.1 53.1 04:00 .016 738.0 60.1 53.3 05:00 .010 738.4 59.6 53.8 06:00 .015 738.8 63.4 54.2 07:00 .026 739.1 67.9 54.7 08:00 .036 739.1 71.3 53.7 09:00 .037 739.0 72.7 54.1 10:00 .041 739.0 74.8 55.0 11:00 .049 738.7 76.2 55.2 12:00 .055 738.3 77.7 55.3 13:00 .060 737.9 79.2 56.2 14:00 .063 737.9 79.3 57.5 15:00 .064 737.7 80.3 57.9 16:00 .062 737.5 80.6 58.0 17:00 .055 737.3 80.6 58.1 18:00 .051 737.3 79.6 57.3 19:00 .043 737.4 76.0 56.3 20:00 .041 737.6 70.1 54.5 21:00 .034 737.8 68.2 53.2 22:00 .026 C 737.9 66.4 52.6 23:00 C 737.8 66.3 52.3 O Average .039 738.0 71.1 54.8 Max .064 739.1 80.6 58.1 Max Hour 15:00 08:00 17:00 17:00 Min .010 737.3 59.6 52.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 24-Jun-2026 22:50:00 23:50:00 0.07 0.07 .58% 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