Date Printed: 10/17/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/16/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .009 12.7 21.6 8.9 01:00 .005 11.8 17.8 6.0 02:00 .005 12.2 19.5 7.3 03:00 .006 11.8 15.8 4.0 04:00 .003 11.7 17.4 5.6 05:00 .002 11.7 17.9 6.1 06:00 .002 10.8 15.4 4.5 07:00 .003 10.1 16.0 5.8 08:00 .006 B 9.4 12.4 2.9 09:00 .015 14.2 19.0 4.7 10:00 .033 17.4 22.9 5.5 11:00 .047 18.0 24.0 6.0 12:00 .056 17.4 25.1 7.7 13:00 .061 16.5 24.4 7.8 14:00 .058 15.7 28.1 12.3 15:00 .059 15.7 23.0 7.3 16:00 .056 14.7 23.8 9.1 17:00 .051 14.8 22.8 8.0 18:00 .050 16.4 26.5 10.0 19:00 .050 16.8 24.3 7.5 20:00 .043 15.7 22.4 6.6 21:00 .025 5.2 10.2 5.0 22:00 .019 C 2.5 8.6 6.1 23:00 C 1.1 4.8 3.7 Average .028 12.6 19.3 6.6 Max .061 18.0 28.1 12.3 Max Hour 13:00 11:00 14:00 14:00 Min .002 1.1 4.8 2.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.61% Date Printed: 10/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/16/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .017 .1 3.8 3.9 .2 01:00 .017 .1 3.2 3.3 .2 02:00 .017 .1 3.3 3.5 .2 03:00 .017 .1 4.4 4.5 .2 04:00 .014 .1 5.3 5.4 .2 05:00 .009 .1 6.1 6.3 .2 06:00 .004 2.0 9.6 11.6 .2 07:00 .005 9.3 10.1 19.5 .3 08:00 .018 2.6 7.3 10.0 .2 09:00 .028 1.4 5.5 6.9 .3 10:00 .036 1.7 6.1 7.9 .3 11:00 .047 .8 4.5 5.3 .4 12:00 .053 .3 2.9 3.2 .4 13:00 .059 .2 3.2 3.5 .4 14:00 .057 .2 2.9 3.1 .4 15:00 .056 .1 C 2.8 C 3.0 C .4 16:00 .057 C C C .4 17:00 .051 .0 C 4.8 C 4.9 C .4 18:00 .046 .0 7.2 7.2 .3 19:00 .049 .0 5.4 5.5 .3 C 20:00 .042 .0 5.2 5.2 C 21:00 .027 .1 3.3 3.5 .2 C 22:00 .018 C .1 3.3 3.5 .2 23:00 C .1 2.7 2.9 .2 Average .032 .8 4.9 5.8 .2 Max .059 9.3 10.1 19.5 .4 Max Hour 13:00 07:00 07:00 07:00 17:00 Min .004 .0 2.7 2.9 .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 16-Oct-2026 15:46:00 16:11:00 69.3 70 -.96% GPT-PS 16-Oct-2026 15:46:00 16:18:00 0.6 0.0 .67 GPTZ 16-Oct-2026 15:46:00 16:38:00 225.2 225 .11% GPT-PREC 16-Oct-2026 15:46:00 17:08:00 157.3 155 1.52% NO2 GPT-PREC 16-Oct-2026 15:46:00 17:08:00 68.3 70 -2.35% NO2 Precision NO2_Diff PRECDIFF 16-Oct-2026 17:15:00 17:15:05 67.8 68.357 -.67% NOx NOx_Auto NO-PREC 16-Oct-2026 15:46:00 16:11:00 69.7 70 -.39% Ozone O3_Auto ZERO 16-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Oct-2026 22:50:00 23:50:00 0.068 0.07 -2.6% SO2 SO2_Auto ZERO 16-Oct-2026 19:46:00 20:11:00 0.1 0.0 .16 SPAN 16-Oct-2026 19:46:00 20:36:00 87.4 90 -2.8% PREC 16-Oct-2026 19:46:00 21:01:00 38.7 40 -3.19% Date Printed: 10/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/16/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 13.6 20.3 6.3 01:00 12.9 16.6 3.4 02:00 13.1 15.7 2.4 03:00 15.1 18.1 2.7 04:00 15.2 18.1 2.7 05:00 14.9 17.5 2.4 06:00 14.0 16.3 2.1 07:00 15.0 18.9 3.6 08:00 17.8 24.3 6.0 09:00 18.9 26.8 7.2 10:00 19.2 26.3 6.2 11:00 18.7 28.1 8.2 12:00 17.0 26.4 8.1 13:00 16.7 24.9 7.0 14:00 15.1 25.2 8.8 15:00 14.9 23.6 7.5 16:00 15.3 26.0 9.5 17:00 14.8 25.0 9.2 18:00 15.7 26.1 9.5 19:00 17.0 26.5 8.6 20:00 14.7 22.9 7.4 21:00 7.5 16.4 8.5 22:00 3.5 10.4 6.7 23:00 1.5 7.5 5.9 Average 14.2 21.1 6.2 Max 19.2 28.1 9.5 Max Hour 10:00 11:00 18:00 Min 1.5 7.5 2.1 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.19% Date Printed: 10/17/2026 01:30 Daily Summary Report Site: Union Cross 10/16/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .018 737.3 69.5 68.7 01:00 .012 737.3 68.5 68.2 02:00 .005 737.0 67.0 67.0 03:00 .005 736.7 66.1 66.1 04:00 .004 736.5 65.3 65.3 05:00 .004 736.5 64.4 64.4 06:00 .004 736.4 63.8 63.8 07:00 .013 736.3 64.6 64.6 08:00 .021 736.2 67.0 65.8 09:00 .037 735.8 70.6 65.2 10:00 .048 735.2 74.0 65.4 11:00 .052 734.5 78.1 66.8 12:00 .058 733.7 80.7 67.5 13:00 .061 733.0 81.8 67.4 14:00 .060 732.4 82.2 66.3 15:00 .059 732.0 82.5 66.6 16:00 .059 731.7 81.7 65.8 17:00 .053 731.8 79.2 64.9 18:00 .047 731.7 76.2 64.6 19:00 .050 731.8 75.9 64.1 20:00 .050 731.8 75.2 63.7 21:00 .034 732.5 72.4 61.2 22:00 .022 C 733.4 68.3 57.8 23:00 C 733.9 63.5 56.0 Average .033 734.3 72.4 64.8 Max .061 737.3 82.5 68.7 Max Hour 13:00 01:00 15:00 00:00 Min .004 731.7 63.5 56.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-Oct-2026 22:50:00 23:50:00 0.069 0.07 .08% 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