Date Printed: 5/28/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/27/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .014 B 4.4 17.3 12.9 01:00 .015 4.3 15.2 10.8 02:00 .017 4.6 18.1 13.4 03:00 .016 4.8 18.3 13.5 04:00 .015 5.3 16.5 11.2 05:00 .016 5.1 15.2 10.1 06:00 .017 4.6 13.1 8.4 07:00 .021 3.7 9.5 5.7 08:00 D 3.4 7.9 4.4 09:00 D 4.4 10.4 5.9 10:00 D 5.0 11.4 6.3 11:00 D 5.5 11.7 6.2 12:00 D 4.5 10.3 5.7 13:00 .031 B 4.4 11.5 7.0 14:00 .039 5.5 11.9 6.4 15:00 .038 5.8 12.1 6.2 16:00 .031 5.1 21.2 16.0 17:00 .027 B 3.7 28.5 24.8 18:00 .022 3.8 19.2 15.4 19:00 .018 4.0 15.9 11.8 20:00 .011 3.7 13.6 9.9 21:00 .009 4.4 15.0 10.6 22:00 .007 C 5.2 17.1 11.8 23:00 C 5.3 19.2 13.8 Average .020 4.6 15.0 10.3 Max .039 5.8 28.5 24.8 Max Hour 14:00 15:00 17:00 17:00 Min .007 3.4 7.9 4.4 Count 18 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-May-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 27-May-2026 22:50:00 23:50:00 0.068 0.07 -1.87% Date Printed: 5/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/27/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .016 .4 3.1 3.5 -.4 01:00 .016 .4 2.8 3.3 -.4 02:00 .016 .4 2.9 3.3 -.4 03:00 .016 .3 2.4 2.8 -.4 04:00 .016 .3 3.8 4.2 -.4 05:00 .015 .5 3.9 4.5 -.4 06:00 .015 .6 B 3.8 B 4.5 B -.4 07:00 .018 B B B -.4 08:00 .021 B B B -.4 09:00 .024 B B B -.4 10:00 .028 B B B -.3 11:00 .032 .5 1.9 2.5 -.4 12:00 .033 .4 1.6 2.1 -.4 13:00 .033 .3 1.5 1.9 -.4 14:00 .037 .3 1.6 2.0 -.3 15:00 .040 .3 C 2.1 C 2.4 C -.3 16:00 .036 C C C -.3 17:00 .032 .5 C 3.4 C 4.0 C -.4 18:00 .027 .4 4.3 4.7 -.4 19:00 .024 .2 3.8 4.1 -.4 C 20:00 .019 .2 4.8 5.1 C 21:00 .019 .2 4.4 4.6 -.4 C 22:00 .017 C .2 5.2 5.4 -.4 23:00 C .5 4.9 5.4 -.4 Average .023 .3 3.2 3.7 -.3 Max .040 .6 5.2 5.4 -.3 Max Hour 15:00 06:00 22:00 23:00 16:00 Min .015 .2 1.5 1.9 -.4 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 27-May-2026 15:46:00 16:11:00 67 70 -4.15% GPT-PS 27-May-2026 15:46:00 16:18:00 0.4 0.0 .41 GPTZ 27-May-2026 15:46:00 16:38:00 216.1 225 -3.92% GPT-PREC 27-May-2026 15:46:00 17:08:00 150.6 155 -2.79% NO2 GPT-PREC 27-May-2026 15:46:00 17:08:00 65.7 70 -6.06% NO2 Precision NO2_Diff PRECDIFF 27-May-2026 17:15:00 17:15:05 65.5 65.76 -.37% NOx NOx_Auto NO-PREC 27-May-2026 15:46:00 16:11:00 67 70 -4.26% Ozone O3_Auto ZERO 27-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-May-2026 22:50:00 23:50:00 0.067 0.07 -3.16% SO2 SO2_Auto ZERO 27-May-2026 19:46:00 20:11:00 -0.5 0.0 -.56 SPAN 27-May-2026 19:46:00 20:36:00 88.4 90 -1.69% PREC 27-May-2026 19:46:00 21:01:00 38.7 40 -3% Date Printed: 5/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/27/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.3 19.0 13.3 01:00 5.4 18.2 12.4 02:00 5.5 18.7 12.8 03:00 5.3 18.2 12.6 04:00 5.9 17.1 10.9 05:00 5.7 15.8 9.7 06:00 5.4 15.2 9.5 07:00 4.6 11.4 6.5 08:00 4.0 10.2 5.8 09:00 4.3 9.6 5.1 10:00 4.8 12.1 6.8 11:00 5.9 13.3 6.8 12:00 5.5 13.7 7.5 13:00 5.0 12.0 6.3 14:00 5.7 13.9 7.4 15:00 6.7 15.0 7.5 16:00 6.3 16.3 9.3 17:00 4.1 22.2 17.4 18:00 3.9 20.0 15.5 19:00 4.1 15.9 11.4 20:00 4.5 17.6 12.7 21:00 4.6 16.1 11.1 22:00 5.0 20.0 14.6 23:00 5.9 26.5 20.0 Average 5.1 16.1 10.5 Max 6.7 26.5 20.0 Max Hour 15:00 23:00 23:00 Min 3.9 9.6 5.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3% Date Printed: 5/28/2026 01:30 Daily Summary Report Site: Union Cross 5/27/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .015 738.1 70.5 70.4 01:00 .014 737.7 70.0 70.0 02:00 .015 737.5 69.5 69.5 03:00 .016 737.5 69.1 69.1 04:00 .016 737.5 69.0 69.0 05:00 .017 737.5 68.9 68.8 06:00 .019 737.7 69.1 68.8 07:00 .023 737.7 69.7 68.9 08:00 .023 737.7 71.1 69.4 09:00 .024 737.7 72.5 69.5 10:00 .029 737.6 75.0 69.8 11:00 .035 737.4 77.6 69.9 12:00 .037 736.8 80.2 70.1 13:00 .036 736.2 81.6 70.7 14:00 .039 735.4 82.5 70.5 15:00 .040 734.7 83.2 70.5 16:00 .039 734.9 80.1 70.3 17:00 .036 735.0 76.2 69.6 18:00 .031 734.7 74.4 68.2 19:00 .028 734.8 73.0 67.8 20:00 .022 735.1 71.7 68.0 21:00 .020 735.7 70.9 68.9 22:00 .016 C 735.6 70.1 68.8 23:00 C 735.3 69.8 68.9 Average .025 736.4 73.5 69.3 Max .040 738.1 83.2 70.7 Max Hour 15:00 00:00 15:00 13:00 Min .014 734.7 68.9 67.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-May-2026 22:50:00 23:50:00 0.069 0.07 .18% 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