Date Printed: 6/27/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/26/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .032 11.4 17.9 6.5 01:00 .024 11.2 17.1 5.8 02:00 .020 11.5 17.9 6.3 03:00 .017 11.2 18.2 7.0 04:00 .010 10.9 17.2 6.3 05:00 .007 10.9 17.0 6.1 06:00 .007 13.1 50.2 37.0 07:00 .022 11.1 23.1 12.0 08:00 .031 10.8 19.1 8.3 09:00 .036 12.6 21.4 8.7 10:00 .049 12.0 19.1 7.1 11:00 .051 B 11.0 19.4 8.4 12:00 .041 6.7 12.9 6.1 13:00 .043 6.8 12.6 5.8 14:00 .047 7.8 15.0 7.1 15:00 .049 7.7 13.4 5.7 16:00 .050 7.5 14.3 6.7 17:00 .052 7.5 15.4 7.9 18:00 .051 8.1 14.1 5.9 19:00 .044 9.4 25.3 15.9 20:00 .039 7.1 12.4 5.2 21:00 .036 7.8 12.5 4.6 22:00 .034 C 8.5 14.6 6.0 23:00 C 8.8 15.0 6.1 Average .034 9.6 18.1 8.4 Max .052 13.1 50.2 37.0 Max Hour 17:00 06:00 06:00 06:00 Min .007 6.7 12.4 4.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 26-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 26-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.32% Date Printed: 6/27/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/26/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .043 .1 7.2 7.4 -.5 01:00 .041 .2 5.8 6.0 -.5 02:00 .030 .3 8.6 9.0 -.5 03:00 .031 .2 7.4 7.6 -.5 04:00 .019 .4 10.0 10.4 -.5 05:00 .015 1.1 10.9 12.1 -.6 06:00 .014 4.2 13.6 17.8 -.4 07:00 .031 1.7 8.7 10.5 -.4 08:00 .040 .9 5.7 6.6 -.4 09:00 .043 .7 4.9 5.6 -.4 10:00 .051 .4 3.1 3.6 -.5 11:00 .060 .4 4.0 4.4 -.3 12:00 .047 .4 2.6 3.1 -.5 13:00 .045 .3 1.9 2.3 -.6 14:00 .054 .3 2.4 2.8 -.5 15:00 .057 .3 C 2.8 C 3.1 C -.4 16:00 .055 C C C -.4 17:00 .056 .2 C 2.6 C 2.9 C -.4 18:00 .053 .2 3.0 3.2 -.3 19:00 .044 .2 4.1 4.4 -.3 C 20:00 .042 .1 3.0 3.1 C 21:00 .038 .2 4.7 5.0 -.2 C 22:00 .036 C .2 4.0 4.2 -.4 23:00 C .3 3.9 4.2 -.5 Average .041 .5 5.4 6.0 -.4 Max .060 4.2 13.6 17.8 -.2 Max Hour 11:00 06:00 06:00 06:00 21:00 Min .014 .1 1.9 2.3 -.6 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 26-Jun-2026 15:46:00 16:11:00 66.2 70 -5.3% GPT-PS 26-Jun-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 26-Jun-2026 15:46:00 16:38:00 214.4 225 -4.71% GPT-PREC 26-Jun-2026 15:46:00 17:08:00 149.8 155 -3.32% NO2 GPT-PREC 26-Jun-2026 15:46:00 17:08:00 65.3 70 -6.69% NO2 Precision NO2_Diff PRECDIFF 26-Jun-2026 17:15:00 17:15:05 64.5 65.316 -1.16% NOx NOx_Auto NO-PREC 26-Jun-2026 15:46:00 16:11:00 66.4 70 -5.04% Ozone O3_Auto ZERO 26-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 26-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.24% SO2 SO2_Auto ZERO 26-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.69 SPAN 26-Jun-2026 19:46:00 20:36:00 86.8 90 -3.48% PREC 26-Jun-2026 19:46:00 21:01:00 37.9 40 -5.04% Date Printed: 6/27/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/26/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 12.5 21.1 8.2 01:00 12.2 19.1 6.5 02:00 12.6 20.0 7.0 03:00 12.7 18.9 5.9 04:00 12.6 18.9 6.1 05:00 13.1 20.5 7.1 06:00 13.4 22.0 8.1 07:00 12.6 21.7 8.4 08:00 12.4 19.7 6.7 09:00 13.4 22.3 8.1 10:00 12.8 P 21.3 P 7.6 P 11:00 12.8 22.7 8.9 12:00 8.6 16.8 7.5 13:00 6.5 12.5 5.5 14:00 9.1 17.2 7.3 15:00 9.6 18.5 8.0 16:00 8.6 17.2 7.8 17:00 8.8 15.8 6.3 18:00 10.1 17.7 6.9 19:00 11.0 18.5 6.8 20:00 9.0 15.7 6.2 21:00 10.0 16.9 6.3 22:00 10.2 16.0 5.3 23:00 10.8 17.2 5.9 Average 11.0 18.6 7.0 Max 13.4 22.7 8.9 Max Hour 09:00 11:00 11:00 Min 6.5 12.5 5.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.04% Date Printed: 6/27/2026 01:30 Daily Summary Report Site: Union Cross 6/26/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .040 738.2 72.4 60.3 01:00 .032 738.0 70.8 59.8 02:00 .029 737.7 69.8 60.0 03:00 .026 737.9 67.7 60.4 04:00 .018 738.3 66.0 61.0 05:00 .014 738.7 66.0 61.6 06:00 .018 739.0 68.5 62.8 07:00 .029 739.4 73.9 64.8 08:00 .037 739.7 76.3 66.1 09:00 .042 739.8 77.2 66.3 10:00 .053 739.9 80.0 66.2 11:00 .049 740.1 78.8 66.6 12:00 .043 739.6 76.7 67.6 13:00 .046 738.8 78.2 68.3 14:00 .050 738.4 80.4 69.1 15:00 .053 737.9 82.6 69.3 16:00 .049 737.8 83.1 69.3 17:00 .051 737.7 83.1 70.3 18:00 .048 737.7 81.7 69.6 19:00 .042 738.0 80.1 69.7 20:00 .037 738.2 77.3 69.6 21:00 .036 738.5 75.5 69.2 22:00 .036 C 738.7 74.6 69.3 23:00 C 738.7 73.2 70.2 Average .038 738.6 75.5 66.1 Max .053 740.1 83.1 70.3 Max Hour 15:00 11:00 17:00 17:00 Min .014 737.7 66.0 59.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 26-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 26-Jun-2026 22:50:00 23:50:00 0.07 0.07 -.38% 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