Date Printed: 10/20/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/19/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .014 3.3 5.8 2.5 01:00 .016 2.9 5.2 2.3 02:00 .015 2.9 5.3 2.4 03:00 .016 2.9 5.4 2.5 04:00 .011 2.9 5.9 2.9 05:00 .008 3.0 6.1 3.1 06:00 .007 3.1 9.2 6.0 07:00 .008 D 3.1 8.6 5.4 08:00 D 2.6 6.9 4.3 09:00 .033 D 2.0 6.6 4.6 10:00 .039 1.6 4.7 3.1 11:00 .040 1.4 4.5 3.0 12:00 .043 1.3 3.2 1.9 13:00 .044 B 1.4 5.3 3.9 14:00 .045 1.3 5.8 4.4 15:00 .046 1.2 4.9 3.6 16:00 .044 B 1.2 4.5 3.3 17:00 .033 1.8 5.6 3.8 18:00 .024 2.6 7.4 4.8 19:00 .022 2.9 6.3 3.3 20:00 .018 2.8 6.1 3.2 21:00 .012 2.9 6.5 3.5 22:00 .009 C 3.1 6.4 3.3 23:00 C 3.2 6.7 3.4 Average .024 2.3 5.9 3.5 Max .046 3.3 9.2 6.0 Max Hour 15:00 00:00 06:00 06:00 Min .007 1.2 3.2 1.9 Count 22 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Oct-2026 22:50:00 23:50:00 0.069 0.07 .05% Date Printed: 10/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/19/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .024 .0 3.0 3.0 .0 01:00 .026 .1 1.8 2.0 .1 02:00 .025 .0 1.7 1.8 .0 03:00 .021 .0 4.6 4.6 .0 04:00 .021 .1 3.6 3.7 .0 05:00 .024 .2 3.2 3.4 .0 06:00 .022 D .1 3.5 3.6 .1 07:00 D 1.8 7.0 8.9 .1 08:00 D 2.0 4.9 7.0 .1 09:00 .035 .5 1.5 2.0 .1 10:00 .038 .3 1.2 1.6 .1 11:00 .041 .2 1.2 1.5 .1 12:00 .043 .2 1.0 1.3 .1 13:00 .044 .2 1.0 1.2 .1 14:00 .044 .2 1.2 1.4 .1 15:00 .045 .2 C 1.2 C 1.4 C .1 16:00 .044 C C C .1 17:00 .040 .1 C 3.7 C 3.9 C .2 18:00 .034 .3 7.3 7.6 .2 19:00 .032 .0 6.3 6.4 .1 C 20:00 .029 .2 8.5 8.7 C 21:00 .014 .6 17.0 17.6 .2 C 22:00 .009 C .9 14.3 15.2 .1 23:00 C .3 11.0 11.3 .1 Average .031 .3 4.7 5.1 .0 Max .045 2.0 17.0 17.6 .2 Max Hour 15:00 08:00 21:00 21:00 21:00 Min .009 .0 1.0 1.2 .0 Count 21 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 19-Oct-2026 15:46:00 16:11:00 68.7 70 -1.72% GPT-PS 19-Oct-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 19-Oct-2026 15:46:00 16:38:00 223.5 225 -.65% GPT-PREC 19-Oct-2026 15:46:00 17:08:00 156.5 155 .98% NO2 GPT-PREC 19-Oct-2026 15:46:00 17:08:00 67.3 70 -3.82% NO2 Precision NO2_Diff PRECDIFF 19-Oct-2026 17:15:00 17:15:05 67 67.323 -.46% NOx NOx_Auto NO-PREC 19-Oct-2026 15:46:00 16:11:00 68.8 70 -1.71% Ozone O3_Auto ZERO 19-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Oct-2026 22:50:00 23:50:00 0.068 0.07 -1.79% SO2 SO2_Auto ZERO 19-Oct-2026 19:46:00 20:11:00 0 0.0 .06 SPAN 19-Oct-2026 19:46:00 20:36:00 87 90 -3.32% PREC 19-Oct-2026 19:46:00 21:01:00 38.5 40 -3.71% Date Printed: 10/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/19/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 2.1 4.6 2.7 01:00 2.4 4.6 2.4 02:00 2.3 4.8 2.7 03:00 2.2 4.5 2.5 04:00 2.1 3.9 2.0 05:00 2.1 4.6 2.7 06:00 1.8 3.3 1.6 07:00 2.4 4.9 2.7 08:00 2.6 5.8 3.3 09:00 1.7 3.8 2.1 10:00 1.4 4.3 3.0 11:00 1.3 2.9 1.6 12:00 1.3 3.0 1.6 13:00 1.3 4.5 3.1 14:00 1.6 4.3 2.6 15:00 1.4 6.2 4.7 16:00 1.4 5.3 3.9 17:00 1.4 4.8 3.4 18:00 3.0 8.2 5.3 19:00 2.7 5.6 3.0 20:00 3.1 6.7 3.7 21:00 5.6 14.0 8.8 22:00 6.5 14.9 8.9 23:00 6.0 12.6 7.0 Average 2.4 5.9 3.5 Max 6.5 14.9 8.9 Max Hour 22:00 22:00 22:00 Min 1.3 2.9 1.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.71% Date Printed: 10/20/2026 01:30 Daily Summary Report Site: Union Cross 10/19/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .019 747.3 42.5 32.3 01:00 .016 747.1 40.8 32.8 02:00 .020 746.9 40.7 32.9 03:00 .017 746.7 39.7 32.9 04:00 .018 746.5 40.0 31.4 05:00 .019 746.4 40.7 31.1 06:00 .016 746.6 39.5 31.2 07:00 .015 746.8 41.1 30.9 08:00 .024 746.9 47.1 31.5 09:00 .033 746.9 52.4 32.7 10:00 .037 746.4 55.8 32.8 11:00 .040 745.8 58.4 33.2 12:00 .041 745.0 60.5 34.7 13:00 .042 744.0 62.5 36.5 14:00 .044 743.4 64.1 37.4 15:00 .045 743.0 64.9 37.8 16:00 .044 742.9 64.7 37.7 17:00 .039 742.7 62.2 36.6 18:00 .033 742.8 58.8 35.3 19:00 .030 742.8 55.2 33.9 20:00 .026 742.6 51.1 33.6 21:00 .020 742.8 49.8 33.3 22:00 .019 C 742.8 48.5 33.4 23:00 C 742.6 47.1 33.3 Average .028 744.9 51.1 33.7 Max .045 747.3 64.9 37.8 Max Hour 15:00 00:00 15:00 15:00 Min .015 742.6 39.5 30.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Oct-2026 22:50:00 23:50:00 0.068 0.07 -1.01% 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