Date Printed: 6/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .019 9.3 14.7 5.4 01:00 .020 9.7 14.6 4.9 02:00 .017 9.9 15.3 5.4 03:00 .012 9.3 14.2 4.8 04:00 .006 9.3 14.6 5.2 05:00 .010 B 10.6 17.8 7.1 06:00 .017 12.7 41.3 28.5 07:00 .028 10.8 17.2 6.4 08:00 .038 9.0 14.7 5.7 09:00 .043 7.3 13.0 5.7 10:00 .043 6.7 12.2 5.5 11:00 .045 6.2 11.8 5.5 12:00 .052 7.4 12.9 5.4 13:00 .052 8.1 13.2 5.1 14:00 .052 8.4 15.7 7.3 15:00 .051 8.3 14.4 6.0 16:00 .049 7.7 14.5 6.8 17:00 .041 B 5.0 20.2 15.1 18:00 .025 3.9 18.5 14.6 19:00 .017 3.6 15.6 11.9 20:00 .019 3.6 15.3 11.7 21:00 .026 3.8 24.8 20.9 22:00 .022 B 4.1 28.5 24.3 23:00 C 4.1 20.9 16.8 Average .030 7.4 17.3 9.8 Max .052 12.7 41.3 28.5 Max Hour 14:00 06:00 06:00 06:00 Min .006 3.6 11.8 4.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Jun-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 22-Jun-2026 22:50:00 23:50:00 0.066 0.069 -3.69% Date Printed: 6/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .2 6.2 6.5 -.4 01:00 .030 .2 5.4 5.6 -.4 02:00 .027 .2 5.2 5.5 -.5 03:00 .025 .3 5.6 5.9 -.5 04:00 .019 .3 8.4 8.8 -.4 05:00 .020 .7 8.9 9.7 -.2 06:00 .027 1.2 7.0 8.3 .2 07:00 .034 1.2 5.8 7.1 .2 08:00 .042 .6 3.6 4.3 -.1 09:00 .045 .5 2.9 3.5 -.2 10:00 .046 .4 2.7 3.2 -.4 11:00 .046 .3 2.1 2.4 -.4 12:00 .053 .3 2.4 2.7 -.1 13:00 .054 .3 2.5 2.8 -.2 14:00 .055 .3 2.5 2.8 -.1 15:00 .053 .3 C 2.5 C 2.9 C -.2 16:00 .051 C C C -.3 17:00 .044 .2 C 2.5 C 2.7 C -.4 18:00 .030 .2 4.6 4.9 -.5 19:00 .023 .3 5.5 5.9 -.5 C 20:00 .016 .6 9.5 10.1 C 21:00 .026 .5 4.1 4.6 -.4 C 22:00 .025 C .3 4.1 4.4 -.5 23:00 C .3 5.8 6.2 -.5 Average .035 .4 4.7 5.2 -.2 Max .055 1.2 9.5 10.1 .2 Max Hour 14:00 07:00 20:00 20:00 07:00 Min .016 .2 2.1 2.4 -.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 22-Jun-2026 15:46:00 16:11:00 66.5 70 -4.96% GPT-PS 22-Jun-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 22-Jun-2026 15:46:00 16:38:00 215.2 225 -4.31% GPT-PREC 22-Jun-2026 15:46:00 17:08:00 150 155 -3.21% NO2 GPT-PREC 22-Jun-2026 15:46:00 17:08:00 65.5 70 -6.36% NO2 Precision NO2_Diff PRECDIFF 22-Jun-2026 17:15:00 17:15:05 65.2 65.547 -.42% NOx NOx_Auto NO-PREC 22-Jun-2026 15:46:00 16:11:00 66.6 70 -4.76% Ozone O3_Auto ZERO 22-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.74% SO2 SO2_Auto ZERO 22-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.68 SPAN 22-Jun-2026 19:46:00 20:36:00 87.3 90 -2.96% PREC 22-Jun-2026 19:46:00 21:01:00 38.2 40 -4.37% Date Printed: 6/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 11.8 17.5 5.2 01:00 11.7 17.2 5.0 02:00 12.4 18.1 5.2 03:00 12.9 18.8 5.4 04:00 14.2 20.8 6.1 05:00 14.2 21.2 6.4 06:00 14.4 22.6 7.5 07:00 13.5 21.2 6.9 08:00 10.8 17.4 5.8 09:00 8.3 15.2 6.1 10:00 7.7 14.4 5.8 11:00 7.0 13.8 5.9 12:00 7.1 14.4 6.3 13:00 7.8 13.9 5.2 14:00 7.9 14.2 5.4 15:00 8.1 15.8 6.7 16:00 7.9 14.7 5.8 17:00 6.6 35.1 27.4 18:00 4.2 23.6 18.8 19:00 4.1 23.9 19.2 20:00 4.7 20.2 15.0 21:00 4.4 21.6 16.7 22:00 4.3 21.4 16.6 23:00 4.7 25.0 19.8 Average 8.7 19.2 9.7 Max 14.4 35.1 27.4 Max Hour 06:00 17:00 17:00 Min 4.1 13.8 5.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.37% Date Printed: 6/23/2026 01:30 Daily Summary Report Site: Union Cross 6/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .031 735.1 74.2 63.3 01:00 .027 734.8 73.3 64.0 02:00 .024 734.6 72.2 64.6 03:00 .023 734.7 71.1 64.9 04:00 .024 734.7 70.7 64.9 05:00 .023 735.0 70.3 65.1 06:00 .025 735.3 72.6 66.4 07:00 .032 735.3 76.6 68.1 08:00 .043 735.1 81.3 68.9 09:00 .047 735.1 84.3 69.3 10:00 .046 735.0 86.6 69.5 11:00 .043 734.9 87.7 69.9 12:00 .044 734.7 89.6 69.8 13:00 .046 734.3 90.7 70.2 14:00 .049 733.9 91.1 70.8 15:00 .048 733.3 91.3 71.4 16:00 .048 733.1 91.1 71.7 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average .036 734.6 80.8 67.8 Max .049 735.3 91.3 71.7 Max Hour 14:00 07:00 15:00 16:00 Min .023 733.1 70.3 63.3 Count 17 17 17 17 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.37% 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