Date Printed: 10/19/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/18/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .018 3.4 7.1 3.7 01:00 .015 3.4 6.7 3.3 02:00 .012 4.0 7.4 3.4 03:00 .013 4.1 6.9 2.8 04:00 .010 4.1 7.4 3.2 05:00 .010 4.2 7.8 3.6 06:00 .010 3.7 7.1 3.3 07:00 .011 3.2 6.2 3.0 08:00 .023 B 2.4 4.5 2.0 09:00 .033 2.2 5.3 3.1 10:00 .034 1.6 4.0 2.3 11:00 .036 1.6 3.4 1.8 12:00 .038 1.4 4.0 2.6 13:00 .039 1.2 4.0 2.8 14:00 .039 1.2 3.1 1.9 15:00 .039 1.2 3.7 2.5 16:00 .039 1.1 2.8 1.6 17:00 .037 1.0 2.6 1.5 18:00 .032 1.6 3.8 2.2 19:00 .031 1.8 3.8 2.0 20:00 .021 2.6 5.7 3.1 21:00 .019 3.5 6.6 3.0 22:00 .016 C 3.8 6.4 2.6 23:00 C 3.5 7.1 3.6 Average .025 2.5 5.3 2.7 Max .039 4.2 7.8 3.7 Max Hour 16:00 05:00 05:00 00:00 Min .010 1.0 2.6 1.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.35% Date Printed: 10/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/18/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .026 .0 1.4 1.5 .1 01:00 .026 .0 1.1 1.2 .1 02:00 .022 .0 1.3 1.4 .1 03:00 .023 .0 1.2 1.3 .0 04:00 .023 .0 2.1 2.1 .1 05:00 .023 .2 2.0 2.3 .1 06:00 .024 .1 1.5 1.6 .1 07:00 .025 .4 1.8 2.2 .2 08:00 .030 .4 1.2 1.6 .2 09:00 .033 .3 .8 1.2 .1 10:00 .034 .4 .8 1.3 .1 11:00 .036 .2 .6 .9 .0 12:00 .038 .5 .8 1.3 .1 13:00 .039 .1 .6 .7 .1 14:00 .039 .2 .7 .9 .1 15:00 .039 .1 C .7 C .8 C .1 16:00 .039 C C C .1 17:00 .036 .0 C 1.4 C 1.5 C .1 18:00 .033 .2 2.5 2.8 .1 19:00 .032 .0 2.2 2.3 .1 C 20:00 .030 .0 3.0 3.1 C 21:00 .025 .0 4.1 4.2 .1 C 22:00 .024 C .1 4.0 4.2 .0 23:00 C .0 2.6 2.6 .0 Average .030 .1 1.6 1.8 .0 Max .039 .5 4.1 4.2 .2 Max Hour 16:00 12:00 21:00 22:00 08:00 Min .022 .0 .6 .7 .0 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 18-Oct-2026 15:46:00 16:11:00 68.7 70 -1.85% GPT-PS 18-Oct-2026 15:46:00 16:18:00 0.5 0.0 .57 GPTZ 18-Oct-2026 15:46:00 16:38:00 223 225 -.88% GPT-PREC 18-Oct-2026 15:46:00 17:08:00 155.4 155 .31% NO2 GPT-PREC 18-Oct-2026 15:46:00 17:08:00 68.1 70 -2.68% NO2 Precision NO2_Diff PRECDIFF 18-Oct-2026 17:15:00 17:15:05 67.5 68.124 -.87% NOx NOx_Auto NO-PREC 18-Oct-2026 15:46:00 16:11:00 68.6 70 -1.88% Ozone O3_Auto ZERO 18-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 18-Oct-2026 22:50:00 23:50:00 0.068 0.07 -2.2% SO2 SO2_Auto ZERO 18-Oct-2026 19:46:00 20:11:00 0 0.0 -.03 SPAN 18-Oct-2026 19:46:00 20:36:00 86.6 90 -3.68% PREC 18-Oct-2026 19:46:00 21:01:00 38.3 40 -4.1% Date Printed: 10/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/18/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 2.6 5.6 3.2 01:00 2.4 4.0 1.8 02:00 2.5 4.5 2.1 03:00 2.2 4.1 2.1 04:00 2.3 4.1 1.9 05:00 2.3 4.2 2.1 06:00 2.2 3.6 1.6 07:00 2.4 4.8 2.6 08:00 2.0 4.6 2.7 09:00 1.8 5.7 4.1 10:00 1.7 3.6 2.0 11:00 1.5 3.2 1.8 12:00 1.3 3.3 2.0 13:00 1.2 3.2 2.1 14:00 1.1 2.8 1.7 15:00 1.1 4.6 3.5 16:00 1.1 3.5 2.4 17:00 1.2 3.9 2.8 18:00 1.7 4.8 3.2 19:00 1.8 5.1 3.4 20:00 2.0 3.8 1.9 21:00 2.5 4.4 2.0 22:00 2.8 5.3 2.7 23:00 2.6 4.5 2.1 Average 1.9 4.2 2.4 Max 2.8 5.7 4.1 Max Hour 22:00 09:00 09:00 Min 1.1 2.8 1.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.1% Date Printed: 10/19/2026 01:30 Daily Summary Report Site: Union Cross 10/18/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .025 745.8 45.7 34.1 01:00 .024 746.0 44.9 33.7 02:00 .023 746.3 43.4 33.1 03:00 .021 746.5 41.7 32.8 04:00 .023 746.9 41.7 31.5 05:00 .023 747.4 41.3 30.7 06:00 .022 747.9 40.3 30.8 07:00 .023 748.5 42.2 30.7 08:00 .029 749.1 46.9 29.3 09:00 .032 749.5 48.9 29.2 10:00 .034 749.5 51.5 29.3 11:00 .036 749.4 53.7 30.2 12:00 .038 748.9 55.9 30.6 13:00 .037 748.4 57.3 32.3 14:00 .038 748.0 58.1 33.1 15:00 .038 747.8 58.7 33.3 16:00 .037 747.6 58.5 33.3 17:00 .035 747.6 56.6 32.8 18:00 .032 747.6 54.0 32.0 19:00 .030 747.8 52.2 31.8 20:00 .030 748.0 50.6 31.5 21:00 .030 747.9 49.3 31.1 22:00 .025 C 747.8 46.6 31.1 23:00 C 747.6 43.7 31.6 Average .029 747.8 49.3 31.6 Max .038 749.5 58.7 34.1 Max Hour 15:00 10:00 15:00 00:00 Min .021 745.8 40.3 29.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Oct-2026 22:50:00 23:50:00 0.07 0.07 .09% 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