Date Printed: 6/28/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/27/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 8.6 13.9 5.3 01:00 .010 7.8 13.1 5.3 02:00 .006 7.7 13.5 5.8 03:00 .007 7.6 13.6 6.0 04:00 .008 7.3 12.6 5.2 05:00 .008 7.9 13.1 5.1 06:00 .009 8.8 17.0 8.2 07:00 .012 9.9 17.7 7.8 08:00 .018 11.5 18.9 7.3 09:00 .023 12.0 19.4 7.4 10:00 .027 B 11.5 17.5 5.9 11:00 .027 11.5 18.2 6.6 12:00 .033 11.7 17.8 6.1 13:00 .045 13.9 21.0 7.0 14:00 .044 13.6 24.1 10.5 15:00 .041 11.6 35.7 24.1 16:00 .030 4.6 47.3 42.6 17:00 .025 4.7 28.0 23.3 18:00 .023 4.4 21.2 16.7 19:00 .020 4.2 19.4 15.2 20:00 .012 4.4 19.8 15.3 21:00 .011 4.6 19.6 14.9 22:00 .008 B 5.1 20.1 15.0 23:00 C 5.4 17.9 12.5 Average .020 8.3 20.0 11.6 Max .045 13.9 47.3 42.6 Max Hour 13:00 13:00 16:00 16:00 Min .006 4.2 12.6 5.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 27-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.66% Date Printed: 6/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/27/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .026 .4 4.3 4.7 -.5 01:00 .022 .5 4.5 5.0 -.5 02:00 .018 .7 5.2 5.9 -.5 03:00 .018 .4 4.4 4.8 -.5 04:00 .016 .4 4.4 4.8 -.5 05:00 .014 .8 4.3 5.1 -.5 06:00 .015 1.0 4.3 5.3 -.5 07:00 .016 1.4 5.0 6.4 -.5 08:00 .020 1.4 4.8 6.2 -.5 09:00 .030 .8 3.7 4.6 -.5 10:00 .037 .6 3.6 4.3 -.5 11:00 .035 .5 3.3 3.9 -.5 12:00 .040 .4 3.1 3.5 -.5 13:00 .044 .4 2.5 2.9 -.5 14:00 .042 .3 2.3 2.7 -.5 15:00 .041 .3 C 2.4 C 2.8 C -.5 16:00 .032 C C C -.5 17:00 .028 .7 C 3.0 C 3.8 C -.5 18:00 .028 .6 3.2 3.9 -.5 19:00 .024 .5 4.5 5.1 -.5 C 20:00 .021 .9 5.8 6.7 C 21:00 .018 .6 7.0 7.6 -.4 C 22:00 .013 C 1.0 7.3 8.4 -.5 23:00 C .8 6.4 7.3 -.5 Average .026 .6 4.3 5.0 -.4 Max .044 1.4 7.3 8.4 -.4 Max Hour 13:00 08:00 22:00 22:00 21:00 Min .013 .3 2.3 2.7 -.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 27-Jun-2026 15:46:00 16:11:00 66.4 70 -5.12% GPT-PS 27-Jun-2026 15:46:00 16:18:00 0.5 0.0 .6 GPTZ 27-Jun-2026 15:46:00 16:38:00 214.3 225 -4.73% GPT-PREC 27-Jun-2026 15:46:00 17:08:00 149 155 -3.87% NO2 GPT-PREC 27-Jun-2026 15:46:00 17:08:00 66.2 70 -5.36% NO2 Precision NO2_Diff PRECDIFF 27-Jun-2026 17:15:00 17:15:05 65.3 66.249 -1.35% NOx NOx_Auto NO-PREC 27-Jun-2026 15:46:00 16:11:00 66.4 70 -5.01% Ozone O3_Auto ZERO 27-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Jun-2026 22:50:00 23:50:00 0.068 0.07 -1.63% SO2 SO2_Auto ZERO 27-Jun-2026 19:46:00 20:11:00 -0.7 0.0 -.73 SPAN 27-Jun-2026 19:46:00 20:36:00 86.6 90 -3.68% PREC 27-Jun-2026 19:46:00 21:01:00 38 40 -4.83% Date Printed: 6/28/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/27/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 10.8 16.7 5.5 01:00 9.9 16.8 6.5 02:00 9.9 16.9 6.6 03:00 10.2 16.5 5.9 04:00 10.6 17.5 6.5 05:00 10.5 16.5 5.6 06:00 11.3 17.6 5.8 07:00 12.3 18.4 5.6 08:00 14.2 P 22.1 P 7.2 P 09:00 14.3 22.0 7.0 10:00 15.0 22.7 6.8 11:00 14.1 20.9 6.1 12:00 14.3 21.0 5.8 13:00 14.2 23.2 7.7 14:00 14.8 27.9 11.6 15:00 13.9 28.3 13.1 16:00 7.8 33.6 24.8 17:00 5.0 27.3 21.5 18:00 5.0 22.2 16.6 19:00 4.9 23.4 17.9 20:00 6.5 24.9 17.8 21:00 5.5 22.7 16.6 22:00 5.9 20.0 13.6 23:00 6.8 20.3 13.1 Average 10.3 21.6 10.6 Max 15.0 33.6 24.8 Max Hour 10:00 16:00 16:00 Min 4.9 16.5 5.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.83% Date Printed: 6/28/2026 01:30 Daily Summary Report Site: Union Cross 6/27/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .022 738.1 72.2 71.0 01:00 .018 737.5 71.5 70.8 02:00 .017 737.3 71.3 70.9 03:00 .014 737.5 71.0 70.8 04:00 .011 737.5 70.9 70.9 05:00 .010 737.6 70.9 70.9 06:00 .012 737.8 71.7 71.7 07:00 .015 738.0 72.4 72.3 08:00 .019 738.2 73.3 72.4 09:00 .030 738.0 75.7 71.9 10:00 .035 737.9 78.2 72.2 11:00 .035 737.9 78.1 72.8 12:00 .040 737.6 79.9 73.9 13:00 .048 736.9 84.0 72.2 14:00 .045 736.7 86.8 70.5 15:00 .045 736.2 86.6 69.5 16:00 .036 736.1 74.1 69.4 17:00 .032 736.1 74.2 66.9 18:00 .031 736.6 73.0 67.2 19:00 .028 736.7 72.4 67.7 20:00 .025 736.4 71.6 68.0 21:00 .020 736.5 71.0 68.3 22:00 .018 C 736.5 70.3 68.7 23:00 C 736.4 69.7 68.8 Average .026 737.1 74.6 70.4 Max .048 738.2 86.8 73.9 Max Hour 13:00 08:00 14:00 12:00 Min .010 736.1 69.7 66.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 27-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 27-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.65% 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