Date Printed: 5/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .024 4.3 7.8 3.4 01:00 .021 5.1 10.4 5.2 02:00 .021 3.8 9.1 5.3 03:00 .018 2.9 5.9 3.0 04:00 .022 2.7 6.1 3.4 05:00 .023 3.0 6.5 3.5 06:00 .021 3.8 7.4 3.6 07:00 .022 3.9 8.0 4.0 08:00 .022 3.8 8.1 4.3 09:00 .023 B 3.8 7.2 3.3 10:00 .022 3.3 6.6 3.2 11:00 .021 3.5 7.0 3.4 12:00 .023 4.6 8.8 4.1 13:00 .022 5.5 9.3 3.8 14:00 .023 6.9 12.1 5.1 15:00 .024 7.2 11.8 4.6 16:00 .023 5.8 9.5 3.6 17:00 .021 6.3 10.5 4.2 18:00 .021 5.8 10.3 4.4 19:00 .022 4.6 8.2 3.6 20:00 .021 4.1 8.1 3.9 21:00 .020 4.1 7.5 3.4 22:00 .019 B 3.5 6.7 3.2 23:00 C 2.9 7.0 4.1 Average .021 4.3 8.3 3.9 Max .024 7.2 12.1 5.3 Max Hour 15:00 15:00 14:00 02:00 Min .018 2.7 5.9 3.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-May-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 22-May-2026 22:50:00 23:50:00 0.071 0.07 2.22% Date Printed: 5/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .021 .2 2.7 2.9 -.4 01:00 .021 .3 2.5 2.8 -.5 02:00 .021 .2 2.5 2.8 -.5 03:00 .020 .2 3.2 3.4 -.5 04:00 .021 .2 2.3 2.6 -.5 05:00 .021 .4 2.3 2.8 -.5 06:00 .020 .4 2.6 3.0 -.5 07:00 .021 .6 2.5 3.1 -.5 08:00 .021 .4 2.1 2.6 -.5 09:00 .021 .7 2.0 2.8 -.5 10:00 .020 .7 2.1 2.9 -.5 11:00 .020 .6 2.0 2.7 -.5 12:00 .021 .6 1.9 2.5 -.5 13:00 .021 .6 2.2 2.9 -.5 14:00 .022 .7 2.1 2.9 -.5 15:00 .021 .5 C 1.8 C 2.3 C -.5 16:00 .021 C C C -.5 17:00 .020 .4 C 1.7 C 2.2 C -.5 18:00 .020 .3 1.6 2.0 -.5 19:00 .020 .3 1.6 2.0 -.5 C 20:00 .019 .3 1.6 1.9 C 21:00 .018 .3 1.5 1.9 -.4 C 22:00 .016 C .3 1.6 1.9 -.5 23:00 C .2 1.6 1.9 -.5 Average .020 .4 2.0 2.5 -.4 Max .022 .7 3.2 3.4 -.4 Max Hour 14:00 14:00 03:00 03:00 21:00 Min .016 .2 1.5 1.9 -.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-May-2026 15:46:00 16:11:00 66.2 70 -5.42% GPT-PS 22-May-2026 15:46:00 16:18:00 0.6 0.0 .6 GPTZ 22-May-2026 15:46:00 16:38:00 214.9 225 -4.47% GPT-PREC 22-May-2026 15:46:00 17:08:00 150.9 155 -2.63% NO2 GPT-PREC 22-May-2026 15:46:00 17:08:00 64.5 70 -7.74% NO2 Precision NO2_Diff PRECDIFF 22-May-2026 17:15:00 17:15:05 64 64.585 -.88% NOx NOx_Auto NO-PREC 22-May-2026 15:46:00 16:11:00 66.2 70 -5.39% Ozone O3_Auto ZERO 22-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-May-2026 22:50:00 23:50:00 0.067 0.07 -3.44% SO2 SO2_Auto ZERO 22-May-2026 19:46:00 20:11:00 -0.6 0.0 -.63 SPAN 22-May-2026 19:46:00 20:36:00 88.1 90 -2.03% PREC 22-May-2026 19:46:00 21:01:00 38.8 40 -2.82% Date Printed: 5/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 4.9 8.7 3.7 01:00 5.6 9.5 4.0 02:00 4.4 9.0 4.6 03:00 3.2 8.1 5.0 04:00 3.4 7.7 4.3 05:00 3.9 7.6 3.7 06:00 4.7 8.4 3.7 07:00 4.2 7.3 3.2 08:00 3.6 6.7 3.1 09:00 3.4 7.0 3.6 10:00 3.1 5.8 2.7 11:00 3.5 P 6.3 P 2.8 P 12:00 4.3 P 7.2 P 2.8 P 13:00 6.1 10.3 4.3 14:00 6.2 10.0 3.9 15:00 5.9 10.7 4.8 16:00 5.8 9.6 3.8 17:00 6.1 10.0 3.9 18:00 4.7 9.1 4.5 19:00 3.9 7.3 3.5 20:00 3.7 6.8 3.1 21:00 3.1 6.2 3.1 22:00 2.8 5.2 2.4 23:00 2.5 5.0 2.4 Average 4.2 7.8 3.6 Max 6.2 10.7 5.0 Max Hour 14:00 15:00 03:00 Min 2.5 5.0 2.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.82% Date Printed: 5/23/2026 01:30 Daily Summary Report Site: Union Cross 5/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .022 739.5 61.1 60.3 01:00 .021 739.5 60.0 59.9 02:00 .019 739.7 58.2 58.3 03:00 .020 739.7 57.2 57.2 04:00 .022 739.6 56.7 56.1 05:00 .021 739.9 56.6 56.0 06:00 .020 740.5 56.6 56.3 07:00 .019 740.6 56.6 56.4 08:00 .019 740.8 56.6 56.2 09:00 .020 740.7 56.7 55.3 10:00 .020 741.0 57.0 55.2 11:00 .021 740.9 57.5 55.7 12:00 .021 741.0 57.8 56.0 13:00 .022 740.7 58.0 56.3 14:00 .022 740.3 58.1 56.6 15:00 .022 739.9 58.1 56.7 16:00 .021 740.0 57.7 56.7 17:00 .020 740.0 57.4 56.7 18:00 .020 740.1 56.9 56.1 19:00 .021 740.5 56.5 55.6 20:00 .020 740.8 56.6 55.9 21:00 .018 741.0 56.8 56.5 22:00 .017 C 740.9 57.1 57.0 23:00 C 741.0 57.5 57.3 Average .020 740.3 57.4 56.6 Max .022 741.0 61.1 60.3 Max Hour 15:00 23:00 00:00 00:00 Min .017 739.5 56.5 55.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-May-2026 22:50:00 23:50:00 0.07 0.07 1.31% 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