Date Printed: 6/19/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/18/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .036 7.2 14.1 6.8 01:00 .034 B 6.8 12.2 5.4 02:00 .030 5.4 10.0 4.6 03:00 .024 4.8 9.8 5.0 04:00 .019 4.6 11.2 6.6 05:00 .017 5.2 12.7 7.4 06:00 .016 6.3 16.5 10.2 07:00 .016 7.4 21.4 14.0 08:00 .020 7.7 19.2 11.4 09:00 .024 B B B 10:00 .030 8.9 B 21.3 B 12.4 B 11:00 .033 9.6 35.5 25.7 12:00 .032 8.9 21.9 12.9 13:00 .038 7.6 19.4 11.8 14:00 .047 2.9 10.5 7.6 15:00 .045 B 3.2 10.3 7.1 16:00 .041 3.5 11.8 8.2 17:00 .034 3.3 9.1 5.8 18:00 .023 3.8 12.4 8.5 19:00 .016 3.0 11.9 8.9 20:00 .011 3.0 14.2 11.2 21:00 .012 3.4 12.7 9.2 22:00 .009 C 4.0 12.9 8.8 23:00 C 4.2 13.0 8.7 Average .026 5.4 14.9 9.4 Max .047 9.6 35.5 25.7 Max Hour 14:00 11:00 11:00 11:00 Min .009 2.9 9.1 4.6 Count 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Jun-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 18-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.76% Date Printed: 6/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/18/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .039 .1 2.8 2.9 -.4 01:00 .037 .1 2.9 3.1 -.4 02:00 .034 .1 2.6 2.8 -.4 03:00 .027 .2 2.3 2.6 -.4 04:00 .022 .3 2.3 2.6 -.4 05:00 .019 .4 2.7 3.1 -.5 06:00 .017 .6 3.3 3.9 -.4 07:00 .018 .9 4.0 5.0 -.4 08:00 .022 1.9 2.9 4.9 -.4 09:00 .026 .6 2.1 2.8 -.4 10:00 .029 .4 2.0 2.4 -.4 11:00 .037 .3 2.2 2.5 -.3 12:00 .036 .2 2.0 2.2 -.4 13:00 .045 .2 2.2 2.5 -.4 14:00 .046 .7 2.8 3.6 -.5 15:00 .045 1.4 C 3.6 C 5.1 C -.4 16:00 .041 C C C -.4 17:00 .031 1.4 C 4.1 C 5.6 C -.4 18:00 .027 1.0 4.3 5.3 -.5 19:00 .018 1.2 5.7 7.0 -.5 C 20:00 .015 1.2 6.2 7.4 C 21:00 .014 1.0 6.3 7.3 -.4 C 22:00 .014 C 1.1 5.9 7.1 -.5 23:00 C 2.8 7.4 10.2 -.4 Average .028 .7 3.5 4.4 -.4 Max .046 2.8 7.4 10.2 -.3 Max Hour 14:00 23:00 23:00 23:00 11:00 Min .014 .1 2.0 2.2 -.5 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-Jun-2026 15:46:00 16:11:00 66.4 70 -5% GPT-PS 18-Jun-2026 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 18-Jun-2026 15:46:00 16:38:00 215.2 225 -4.35% GPT-PREC 18-Jun-2026 15:46:00 17:08:00 150.3 155 -2.98% NO2 GPT-PREC 18-Jun-2026 15:46:00 17:08:00 65.2 70 -6.77% NO2 Precision NO2_Diff PRECDIFF 18-Jun-2026 17:15:00 17:15:05 64.8 65.26 -.63% NOx NOx_Auto NO-PREC 18-Jun-2026 15:46:00 16:11:00 66.6 70 -4.85% Ozone O3_Auto ZERO 18-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.65% SO2 SO2_Auto ZERO 18-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.65 SPAN 18-Jun-2026 19:46:00 20:36:00 87.1 90 -3.2% PREC 18-Jun-2026 19:46:00 21:01:00 38.2 40 -4.28% Date Printed: 6/19/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/18/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.6 16.1 7.0 01:00 8.3 14.8 6.0 02:00 7.6 13.5 5.4 03:00 6.5 13.1 6.1 04:00 6.1 13.8 7.2 05:00 6.2 15.8 9.0 06:00 7.1 17.6 9.8 07:00 7.9 20.1 11.4 08:00 9.8 44.9 32.9 09:00 9.4 23.0 12.3 10:00 9.5 22.4 11.7 11:00 10.3 24.1 12.4 12:00 10.1 24.0 12.4 13:00 6.8 25.2 17.1 14:00 3.8 15.1 10.8 15:00 3.5 14.2 10.0 16:00 3.9 12.2 7.7 17:00 3.8 10.3 6.0 18:00 3.6 12.6 8.6 19:00 4.0 17.3 12.8 20:00 3.6 21.0 16.8 21:00 3.8 20.0 15.6 22:00 4.0 15.1 10.7 23:00 5.1 17.0 11.4 Average 6.3 18.4 11.2 Max 10.3 44.9 32.9 Max Hour 11:00 08:00 08:00 Min 3.5 10.3 5.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.28% Date Printed: 6/19/2026 01:30 Daily Summary Report Site: Union Cross 6/18/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 732.2 74.8 62.6 01:00 .033 731.7 72.8 62.6 02:00 .030 731.5 72.1 63.9 03:00 .026 731.4 72.7 66.4 04:00 .022 731.3 73.0 68.1 05:00 .020 731.7 74.7 69.2 06:00 .019 732.4 75.1 69.2 07:00 .020 732.9 76.4 69.5 08:00 .023 733.3 79.1 70.1 09:00 .029 733.2 81.9 70.8 10:00 .034 733.5 83.6 71.2 11:00 .034 733.4 85.8 71.6 12:00 .034 733.0 86.9 71.9 13:00 .041 732.9 84.7 69.2 14:00 .053 733.0 73.7 65.1 15:00 .047 732.7 75.5 68.6 16:00 .044 732.5 80.1 70.6 17:00 .042 732.6 80.3 71.2 18:00 .028 732.8 77.6 69.3 19:00 .022 733.1 72.8 69.8 20:00 .016 733.6 71.2 69.4 21:00 .014 733.6 71.3 70.1 22:00 .014 C 733.3 72.1 71.1 23:00 C 733.2 72.4 72.0 Average .029 732.7 76.6 68.8 Max .053 733.6 86.9 72.0 Max Hour 14:00 21:00 12:00 23:00 Min .014 731.3 71.2 62.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 18-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 18-Jun-2026 22:50:00 23:50:00 0.07 0.07 .93% 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