Date Printed: 9/28/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/27/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .027 3.7 7.7 3.9 01:00 .022 3.8 7.6 3.8 02:00 .020 3.9 7.7 3.7 03:00 .017 4.0 8.6 4.5 04:00 .015 4.2 8.4 4.2 05:00 .009 4.4 8.7 4.3 06:00 .009 4.4 8.8 4.4 07:00 .018 4.9 10.5 5.5 08:00 .029 4.2 8.8 4.6 09:00 .036 B 4.0 9.5 5.4 10:00 .040 3.9 9.6 5.7 11:00 .042 3.7 8.7 5.0 12:00 .043 3.4 8.5 5.0 13:00 .043 3.4 8.1 4.6 14:00 .043 3.7 8.8 5.0 15:00 .044 3.7 9.1 5.3 16:00 .042 4.1 9.7 5.5 17:00 .039 4.4 11.1 6.7 18:00 .029 4.6 10.5 5.8 19:00 .031 4.7 9.8 5.1 20:00 .030 4.6 11.6 6.9 21:00 .026 4.8 12.2 7.4 22:00 .021 C 4.7 11.9 7.2 23:00 C 4.8 11.8 7.0 Average .029 4.1 9.4 5.2 Max .044 4.9 12.2 7.4 Max Hour 15:00 07:00 21:00 21:00 Min .009 3.4 7.6 3.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Sep-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 27-Sep-2026 22:50:00 23:50:00 0.068 0.07 -1.5% Date Printed: 9/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/27/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .026 .1 6.8 7.0 .2 01:00 .025 .0 5.1 5.1 .2 02:00 .025 .0 4.2 4.3 .2 03:00 .024 .0 4.4 4.5 .2 04:00 .022 .1 4.2 4.3 .2 05:00 .018 .1 4.6 4.7 .2 06:00 .018 .4 5.3 5.7 .2 07:00 .023 .7 4.4 5.1 .2 08:00 .034 .2 1.7 2.0 .3 09:00 .037 .2 1.5 1.8 .3 10:00 .039 .2 1.3 1.5 .3 11:00 .040 .2 1.3 1.5 .3 12:00 .043 .4 1.7 2.2 .3 13:00 .045 .3 1.4 1.7 .3 14:00 .044 .2 1.6 1.8 .3 15:00 .043 .1 C 1.5 C 1.6 C .3 16:00 .040 C C C .2 17:00 .036 .1 C 2.9 C 3.0 C .2 18:00 .033 .0 4.2 4.2 .2 19:00 .031 .0 5.2 5.2 .3 C 20:00 .028 .0 7.0 7.0 C 21:00 .026 .0 6.4 6.4 .3 C 22:00 .026 C .0 5.7 5.8 .2 23:00 C .0 5.7 5.7 .2 Average .031 .1 3.8 4.0 .2 Max .045 .7 7.0 7.0 .3 Max Hour 13:00 07:00 20:00 20:00 21:00 Min .018 .0 1.3 1.5 .2 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 27-Sep-2026 15:46:00 16:11:00 69.5 70 -.64% GPT-PS 27-Sep-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 27-Sep-2026 15:46:00 16:38:00 225 225 .03% GPT-PREC 27-Sep-2026 15:46:00 17:08:00 157 155 1.31% NO2 GPT-PREC 27-Sep-2026 15:46:00 17:08:00 68.7 70 -1.83% NO2 Precision NO2_Diff PRECDIFF 27-Sep-2026 17:15:00 17:15:05 68 68.72 -1% NOx NOx_Auto NO-PREC 27-Sep-2026 15:46:00 16:11:00 69.3 70 -.94% Ozone O3_Auto ZERO 27-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Sep-2026 22:50:00 23:50:00 0.068 0.07 -2.32% SO2 SO2_Auto ZERO 27-Sep-2026 19:46:00 20:11:00 0.1 0.0 .14 SPAN 27-Sep-2026 19:46:00 20:36:00 88.1 90 -2.04% PREC 27-Sep-2026 19:46:00 21:01:00 39 40 -2.28% Date Printed: 9/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/27/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 4.6 9.0 4.4 01:00 4.3 8.2 3.9 02:00 4.8 8.7 3.9 03:00 4.8 7.8 3.0 04:00 4.5 7.5 3.0 05:00 4.6 7.8 3.3 06:00 4.4 8.6 4.3 07:00 4.0 7.9 3.8 08:00 3.8 7.4 3.4 09:00 3.9 9.4 5.2 10:00 3.7 9.2 5.2 11:00 3.7 9.5 5.5 12:00 3.4 8.3 4.6 13:00 3.4 8.7 4.8 14:00 3.7 9.8 5.7 15:00 3.8 9.4 5.2 16:00 4.1 10.4 5.8 17:00 4.7 11.1 6.0 18:00 4.6 9.4 4.5 19:00 4.6 9.8 5.0 20:00 5.5 11.2 5.5 21:00 4.6 10.1 5.4 22:00 4.6 9.4 4.7 23:00 4.4 10.1 5.6 Average 4.2 9.1 4.6 Max 5.5 11.2 6.0 Max Hour 20:00 20:00 17:00 Min 3.4 7.4 3.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.28% Date Printed: 9/28/2026 01:30 Daily Summary Report Site: Union Cross 9/27/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .027 734.1 57.5 46.8 01:00 .021 733.9 55.5 46.7 02:00 .019 733.6 53.2 47.4 03:00 .017 733.1 53.6 47.6 04:00 .021 733.0 55.1 47.5 05:00 .019 732.9 54.2 47.4 06:00 .021 733.1 52.9 47.8 07:00 .021 733.3 55.2 48.7 08:00 .032 733.2 62.2 50.0 09:00 .039 732.9 66.6 50.4 10:00 .040 732.7 69.4 51.2 11:00 .042 732.5 71.0 50.9 12:00 .044 732.2 73.3 50.8 13:00 .046 731.6 74.5 50.6 14:00 .047 731.2 75.2 51.4 15:00 .046 731.0 75.5 52.3 16:00 .044 731.3 74.8 52.2 17:00 .040 731.7 72.4 51.5 18:00 .035 732.1 69.3 50.3 19:00 .031 732.7 66.8 49.3 20:00 .029 733.3 64.0 48.7 21:00 .029 733.5 62.3 48.2 22:00 .026 C 733.5 61.2 48.0 23:00 C 733.6 60.4 47.9 Average .032 732.7 64.0 49.3 Max .047 734.1 75.5 52.3 Max Hour 14:00 00:00 15:00 15:00 Min .017 731.0 52.9 46.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Sep-2026 22:50:00 23:50:00 0.069 0.07 .29% 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