Date Printed: 10/15/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/14/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 13.8 23.7 9.9 01:00 .014 13.6 22.6 9.0 02:00 .007 13.0 23.1 10.0 03:00 .005 13.3 22.7 9.3 04:00 .003 13.4 22.9 9.5 05:00 .002 13.0 23.2 10.2 06:00 .002 12.8 23.9 11.1 07:00 .003 11.9 22.7 10.7 08:00 D 13.1 23.5 10.4 09:00 D 12.1 21.6 9.5 10:00 D 11.4 21.0 9.5 11:00 .049 D 10.3 18.9 8.6 12:00 .054 8.9 17.6 8.6 13:00 .054 8.4 16.3 7.9 14:00 .056 9.2 18.1 8.9 15:00 .056 9.3 18.2 8.8 16:00 .059 8.5 17.1 8.6 17:00 .050 12.1 24.6 12.6 18:00 .040 21.9 38.9 16.8 19:00 .030 12.2 21.9 9.6 20:00 .030 11.3 19.9 8.5 21:00 .020 11.4 21.0 9.5 22:00 .013 B 12.1 22.7 10.6 23:00 B 11.5 22.8 11.2 Average .028 12.0 22.0 9.9 Max .059 21.9 38.9 16.8 Max Hour 16:00 18:00 18:00 18:00 Min .002 8.4 16.3 7.9 Count 20 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.76% Date Printed: 10/15/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/14/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .029 .2 7.2 7.4 .2 01:00 .025 .1 7.0 7.2 .2 02:00 .015 .1 7.9 8.1 .2 03:00 .013 .1 7.7 7.9 .2 04:00 .011 .2 7.7 8.0 .2 05:00 .005 2.0 13.8 15.9 .2 06:00 .002 12.3 B 15.0 B 27.3 B .4 07:00 .003 B B B .5 08:00 .017 B B B .3 09:00 .034 B B B .3 10:00 .048 B B B .3 11:00 .052 .3 2.3 2.7 .3 12:00 .050 .1 1.5 1.7 .3 13:00 .055 .1 1.9 2.0 .3 14:00 .058 .1 2.3 2.5 .3 15:00 .057 .1 C 2.4 C 2.6 C .3 16:00 .054 C C C .4 17:00 .051 .1 C 7.3 C 7.5 C .3 18:00 .041 .0 13.0 13.0 .3 19:00 .032 .1 15.0 15.2 .3 C 20:00 .031 .2 15.0 15.3 C 21:00 .026 .3 13.5 13.8 .3 C 22:00 .019 C .6 17.5 18.1 .2 23:00 C .3 12.9 13.3 .2 Average .031 .9 8.9 9.9 .2 Max .058 12.3 17.5 27.3 .5 Max Hour 14:00 06:00 22:00 06:00 07:00 Min .002 .0 1.5 1.7 .2 Count 23 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 14-Oct-2026 15:46:00 16:11:00 69.6 70 -.55% GPT-PS 14-Oct-2026 15:46:00 16:18:00 0.4 0.0 .45 GPTZ 14-Oct-2026 15:46:00 16:38:00 224.9 225 -.02% GPT-PREC 14-Oct-2026 15:46:00 17:08:00 157.3 155 1.51% NO2 GPT-PREC 14-Oct-2026 15:46:00 17:08:00 67.8 70 -3.01% NO2 Precision NO2_Diff PRECDIFF 14-Oct-2026 17:15:00 17:15:05 67.6 67.896 -.4% NOx NOx_Auto NO-PREC 14-Oct-2026 15:46:00 16:11:00 69.5 70 -.65% Ozone O3_Auto ZERO 14-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 14-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3.37% SO2 SO2_Auto ZERO 14-Oct-2026 19:46:00 20:11:00 0.1 0.0 .18 SPAN 14-Oct-2026 19:46:00 20:36:00 87.2 90 -3.08% PREC 14-Oct-2026 19:46:00 21:01:00 38.5 40 -3.52% Date Printed: 10/15/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/14/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 13.4 22.2 8.6 01:00 14.2 22.7 8.3 02:00 14.0 21.5 7.4 03:00 14.1 21.0 6.9 04:00 14.3 22.1 7.7 05:00 14.4 21.8 7.5 06:00 14.4 22.9 8.5 07:00 14.2 25.6 11.3 08:00 13.2 26.6 12.7 09:00 11.3 B 26.2 B 14.0 B 10:00 B B B 11:00 B B B 12:00 8.8 18.2 8.4 13:00 8.2 16.9 7.7 14:00 8.2 18.2 8.9 15:00 9.3 19.0 8.7 16:00 9.3 18.4 8.2 17:00 8.9 17.5 8.0 18:00 9.5 20.4 10.3 19:00 10.2 18.2 7.5 20:00 11.1 20.2 8.6 21:00 11.8 22.2 10.0 22:00 12.3 23.9 11.2 23:00 12.0 21.8 9.5 Average 11.6 21.2 9.0 Max 14.4 26.6 14.0 Max Hour 06:00 08:00 09:00 Min 8.2 16.9 6.9 Count 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.52% Date Printed: 10/15/2026 01:30 Daily Summary Report Site: Union Cross 10/14/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .030 737.3 67.1 59.3 01:00 .035 736.9 66.3 59.3 02:00 .026 736.9 64.3 59.2 03:00 .026 736.9 63.2 59.6 04:00 .022 737.5 62.1 59.6 05:00 .015 737.8 61.3 59.7 06:00 .010 738.0 61.2 59.8 07:00 .013 738.3 62.8 60.1 08:00 .011 738.4 68.7 60.7 09:00 .018 738.5 76.1 62.8 10:00 .043 738.3 81.0 64.2 11:00 .055 738.0 83.6 64.4 12:00 .058 737.6 85.0 65.9 13:00 .056 737.1 86.1 64.8 14:00 .054 736.9 87.1 64.2 15:00 .054 736.7 86.6 64.5 16:00 .055 736.8 85.9 66.1 17:00 .052 736.9 82.6 65.3 18:00 .047 737.1 78.6 64.3 19:00 .040 737.4 75.6 64.0 20:00 .034 737.6 72.9 62.7 21:00 .030 737.8 73.0 61.2 22:00 .031 C 737.9 71.0 60.8 23:00 C 737.9 70.5 60.9 Average .035 737.5 73.8 62.2 Max .058 738.5 87.1 66.1 Max Hour 12:00 09:00 14:00 16:00 Min .010 736.7 61.2 59.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Oct-2026 22:50:00 23:50:00 0.07 0.07 .63% 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