Date Printed: 9/25/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/24/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .018 6.3 19.7 13.3 01:00 .019 6.2 19.4 13.1 02:00 .019 6.1 18.2 12.1 03:00 .016 5.6 16.4 10.7 04:00 .017 5.1 17.0 11.9 05:00 .019 5.0 17.5 12.4 06:00 .019 4.2 11.4 7.2 07:00 .019 3.4 8.5 5.0 08:00 .018 2.7 B 6.1 B 3.3 B 09:00 .011 B B B 10:00 .013 2.7 6.0 3.3 11:00 .013 3.1 7.4 4.2 12:00 .019 4.0 9.5 5.4 13:00 .022 B 4.3 10.6 6.2 14:00 .022 4.3 11.7 7.4 15:00 .023 4.4 12.6 8.1 16:00 .025 4.5 12.9 8.4 17:00 .024 B 4.4 11.8 7.4 18:00 .021 4.5 11.6 7.1 19:00 .027 4.3 9.9 5.5 20:00 .026 4.6 11.9 7.3 21:00 .023 4.6 10.9 6.2 22:00 .023 C 4.8 11.4 6.6 23:00 C 4.8 11.8 7.0 Average .019 4.5 12.3 7.7 Max .027 6.3 19.7 13.3 Max Hour 19:00 00:00 00:00 00:00 Min .011 2.7 6.0 3.3 Count 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Sep-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 24-Sep-2026 22:50:00 23:50:00 0.067 0.07 -3.47% Date Printed: 9/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/24/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .021 .0 1.2 1.3 .1 01:00 .022 .0 1.2 1.3 .1 02:00 .022 .0 1.2 1.3 .1 03:00 .021 .0 2.6 2.7 .1 04:00 .018 .1 5.2 5.3 .1 05:00 .022 .1 1.2 1.3 .1 06:00 .023 .1 1.1 1.3 .1 07:00 .023 .2 1.2 1.5 .1 08:00 .020 .8 3.5 4.3 .1 09:00 .019 1.5 6.3 7.8 .1 10:00 .021 1.4 5.0 6.5 .1 11:00 .022 1.4 4.2 5.7 .1 12:00 .024 1.3 3.3 4.7 .2 13:00 .025 .3 1.0 1.3 .2 14:00 .023 .4 1.3 1.7 .2 15:00 .023 .3 C 1.3 C 1.6 C .2 16:00 .026 C C C .1 17:00 .025 .0 C 1.8 C 1.9 C .2 18:00 .026 .1 2.0 2.1 .1 19:00 .030 .0 1.7 1.8 .1 C 20:00 .029 .1 3.1 3.2 C 21:00 .025 .1 4.5 4.7 .1 C 22:00 .027 C .0 1.9 1.9 .1 23:00 C .1 1.5 1.6 .1 Average .023 .3 2.4 2.9 .1 Max .030 1.5 6.3 7.8 .2 Max Hour 19:00 09:00 09:00 09:00 17:00 Min .018 .0 1.0 1.3 .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 24-Sep-2026 15:46:00 16:11:00 69.1 70 -1.27% GPT-PS 24-Sep-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 24-Sep-2026 15:46:00 16:38:00 224.2 225 -.31% GPT-PREC 24-Sep-2026 15:46:00 17:08:00 156.8 155 1.19% NO2 GPT-PREC 24-Sep-2026 15:46:00 17:08:00 67.8 70 -3.09% NO2 Precision NO2_Diff PRECDIFF 24-Sep-2026 17:15:00 17:15:05 67.4 67.836 -.57% NOx NOx_Auto NO-PREC 24-Sep-2026 15:46:00 16:11:00 69 70 -1.34% Ozone O3_Auto ZERO 24-Sep-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 24-Sep-2026 22:50:00 23:50:00 0.067 0.07 -2.55% SO2 SO2_Auto ZERO 24-Sep-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 24-Sep-2026 19:46:00 20:36:00 87.9 90 -2.26% PREC 24-Sep-2026 19:46:00 21:01:00 38.8 40 -2.88% Date Printed: 9/25/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/24/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.4 13.8 8.5 01:00 5.2 13.3 8.3 02:00 5.1 12.8 7.8 03:00 4.9 13.5 8.7 04:00 4.4 10.8 6.5 05:00 4.3 11.6 7.5 06:00 3.5 7.9 4.5 07:00 3.1 7.1 4.2 08:00 2.6 5.5 2.9 09:00 2.2 4.7 2.5 10:00 2.6 6.0 3.5 11:00 3.3 6.9 3.7 12:00 3.9 8.6 4.8 13:00 3.9 10.0 6.2 14:00 3.9 9.5 5.5 15:00 4.0 9.3 5.2 16:00 4.1 9.9 5.8 17:00 4.0 9.7 5.7 18:00 4.0 10.0 6.0 19:00 4.1 9.1 5.1 20:00 4.3 9.5 5.3 21:00 4.3 8.7 4.6 22:00 5.1 10.3 5.4 23:00 4.4 9.6 5.4 Average 4.0 9.5 5.5 Max 5.4 13.8 8.7 Max Hour 00:00 00:00 03:00 Min 2.2 4.7 2.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.88% Date Printed: 9/25/2026 01:30 Daily Summary Report Site: Union Cross 9/24/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .021 742.2 57.3 54.5 01:00 .021 742.0 57.0 53.7 02:00 .021 741.6 56.8 53.0 03:00 .022 741.4 56.7 52.5 04:00 .021 741.6 56.1 52.5 05:00 .021 741.8 55.4 52.3 06:00 .022 742.2 54.3 52.0 07:00 .023 742.4 53.6 51.7 08:00 .022 742.6 53.1 51.6 09:00 .022 742.5 53.0 52.1 10:00 .023 742.4 53.4 52.4 11:00 .025 742.2 54.2 52.4 12:00 .024 741.6 55.0 53.3 13:00 .022 741.1 56.2 54.8 14:00 .020 740.6 59.3 55.6 15:00 .025 740.5 62.2 54.2 16:00 .027 740.5 62.7 53.2 17:00 .019 740.7 61.3 53.9 18:00 .027 740.7 60.4 51.2 19:00 .031 741.1 58.6 49.1 20:00 .031 741.3 57.0 48.2 21:00 .028 741.2 54.5 47.8 22:00 .031 C 741.1 53.5 47.0 23:00 C 741.2 52.1 47.1 Average .023 741.5 56.4 51.9 Max .031 742.6 62.7 55.6 Max Hour 22:00 08:00 16:00 14:00 Min .019 740.5 52.1 47.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 24-Sep-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 24-Sep-2026 22:50:00 23:50:00 0.069 0.07 -.65% 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