Date Printed: 10/22/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/21/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .014 B 3.7 7.8 4.0 01:00 .013 3.6 6.7 3.1 02:00 .015 3.7 8.0 4.3 03:00 .014 3.6 6.9 3.2 04:00 .010 3.6 7.6 3.9 05:00 .006 3.7 10.1 6.3 06:00 .004 3.9 9.6 5.7 07:00 .006 3.9 11.3 7.3 08:00 .017 3.6 11.4 7.7 09:00 .032 3.4 9.3 5.9 10:00 .039 3.2 9.3 6.1 11:00 .043 3.1 10.2 7.0 12:00 .046 3.1 10.7 7.5 13:00 .047 3.1 11.1 8.0 14:00 .048 2.9 10.1 7.2 15:00 .048 2.9 9.7 6.7 16:00 .045 B 3.0 10.6 7.6 17:00 .037 3.4 12.0 8.6 18:00 .029 3.6 11.3 7.7 19:00 .018 3.8 11.8 7.9 20:00 .018 4.0 11.4 7.3 21:00 .015 16.3 27.4 11.1 22:00 .008 C 35.4 52.1 16.7 23:00 C 8.3 16.3 7.9 Average .024 5.5 12.6 7.0 Max .048 35.4 52.1 16.7 Max Hour 15:00 22:00 22:00 22:00 Min .004 2.9 6.7 3.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.93% Date Printed: 10/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/21/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .037 .0 3.0 3.0 .2 01:00 .034 .0 2.8 2.9 .2 02:00 .034 .0 2.1 2.1 .2 03:00 .033 .0 2.5 2.5 .1 04:00 .034 .0 2.5 2.5 .1 05:00 .026 .1 6.0 6.1 .1 06:00 .014 1.6 16.7 18.4 .1 07:00 .006 21.2 21.2 42.5 .4 08:00 .032 1.7 6.0 7.8 .3 09:00 D .7 2.5 3.2 .3 10:00 D .4 1.8 2.3 .2 11:00 D .3 1.8 2.2 .3 12:00 D .1 1.5 1.6 .3 13:00 .047 D .1 1.4 1.6 .3 14:00 .047 .1 1.4 1.6 .3 15:00 .048 .3 C 1.6 C 2.0 C .3 16:00 .047 C C C .3 17:00 .042 .0 C 4.1 C 4.2 C .3 18:00 .024 2.2 14.3 16.6 .3 19:00 .016 .7 15.0 15.7 .2 C 20:00 .011 1.6 21.1 22.8 C 21:00 .004 4.7 26.3 31.1 .3 C 22:00 .003 C 5.9 24.1 30.1 .2 23:00 C 3.2 18.5 21.8 .2 Average .028 1.9 8.6 10.6 .2 Max .048 21.2 26.3 42.5 .4 Max Hour 15:00 07:00 21:00 07:00 07:00 Min .003 .0 1.4 1.6 .1 Count 19 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 21-Oct-2026 15:46:00 16:11:00 69.1 70 -1.22% GPT-PS 21-Oct-2026 15:46:00 16:18:00 0.4 0.0 .42 GPTZ 21-Oct-2026 15:46:00 16:38:00 224.1 225 -.4% GPT-PREC 21-Oct-2026 15:46:00 17:08:00 156.7 155 1.11% NO2 GPT-PREC 21-Oct-2026 15:46:00 17:08:00 67.9 70 -2.97% NO2 Precision NO2_Diff PRECDIFF 21-Oct-2026 17:15:00 17:15:05 67.3 67.922 -.79% NOx NOx_Auto NO-PREC 21-Oct-2026 15:46:00 16:11:00 68.9 70 -1.44% Ozone O3_Auto ZERO 21-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 21-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3% SO2 SO2_Auto ZERO 21-Oct-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 21-Oct-2026 19:46:00 20:36:00 87 90 -3.29% PREC 21-Oct-2026 19:46:00 21:01:00 38.3 40 -4.14% Date Printed: 10/22/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/21/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.0 7.6 4.7 01:00 3.0 6.2 3.2 02:00 3.0 6.4 3.5 03:00 2.9 7.3 4.5 04:00 3.1 7.1 4.2 05:00 3.3 7.7 4.7 06:00 10.1 32.9 24.1 07:00 9.4 31.6 23.1 08:00 4.2 16.1 12.0 09:00 3.1 10.7 7.7 10:00 3.0 8.4 5.4 11:00 3.0 10.1 7.0 12:00 3.2 13.0 9.6 13:00 2.9 8.6 5.5 14:00 2.8 8.1 5.1 15:00 2.8 10.6 7.5 16:00 2.9 8.7 5.6 17:00 3.5 11.6 8.0 18:00 3.9 10.1 6.2 19:00 5.5 14.5 9.1 20:00 6.5 14.3 7.9 21:00 7.3 17.1 10.1 22:00 8.8 16.8 8.3 23:00 7.7 16.3 9.0 Average 4.5 12.5 8.1 Max 10.1 32.9 24.1 Max Hour 06:00 06:00 06:00 Min 2.8 6.2 3.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.14% Date Printed: 10/22/2026 01:30 Daily Summary Report Site: Union Cross 10/21/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .033 741.3 54.3 37.1 01:00 .027 741.2 50.9 37.3 02:00 .021 741.2 48.5 37.8 03:00 .021 741.1 47.9 38.7 04:00 .027 741.2 48.2 37.3 05:00 .019 741.3 47.9 36.6 06:00 .017 741.4 47.7 36.3 07:00 .015 D 741.9 48.8 37.0 08:00 D 742.1 54.2 39.0 09:00 D 742.1 58.4 39.5 10:00 D 741.9 61.5 39.8 11:00 .041 741.4 63.6 40.5 12:00 .044 740.7 65.1 41.7 13:00 .047 739.9 67.1 43.2 14:00 .047 739.1 68.1 43.5 15:00 .048 738.8 68.8 44.1 16:00 .045 738.7 68.6 44.4 17:00 .039 738.7 65.1 43.7 18:00 .028 738.9 60.1 42.0 19:00 .025 738.9 57.0 40.8 20:00 .015 739.0 54.3 41.4 21:00 .009 739.2 51.7 41.9 22:00 .007 C 739.3 50.6 41.4 23:00 C 739.0 50.8 40.2 Average .028 740.3 56.6 40.2 Max .048 742.1 68.8 44.4 Max Hour 15:00 09:00 15:00 16:00 Min .007 738.7 47.7 36.3 Count 20 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 21-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 21-Oct-2026 22:50:00 23:50:00 0.07 0.07 .52% 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