Date Printed: 3/23/2026 01:30 Daily Summary Report Site: Clemmons Middle 3/22/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .019 22.1 29.1 6.9 01:00 .022 23.8 32.3 8.5 02:00 .023 23.5 32.1 8.5 03:00 .021 20.6 27.6 7.0 04:00 .022 17.3 24.1 6.7 05:00 .019 16.6 22.7 6.1 06:00 .020 B 16.0 22.0 6.0 07:00 .020 15.1 20.7 5.6 08:00 .031 14.9 20.8 5.8 09:00 .040 B 14.6 21.9 7.3 10:00 .047 15.4 24.0 8.5 11:00 .052 18.0 28.6 10.5 12:00 .053 17.6 26.9 9.2 13:00 .055 15.3 25.4 10.0 14:00 .057 14.4 23.8 9.3 15:00 .057 13.8 24.4 10.5 16:00 .054 11.7 21.1 9.3 17:00 .055 12.7 24.8 12.0 18:00 .052 12.4 22.3 9.9 19:00 .048 12.2 25.5 13.2 20:00 .047 12.7 27.3 14.6 21:00 .046 13.7 28.4 14.7 22:00 .046 B 14.7 29.1 14.3 23:00 C 16.1 33.0 16.9 Average .039 16.0 25.7 9.6 Max .057 23.8 33.0 16.9 Max Hour 15:00 01:00 23:00 23:00 Min .019 11.7 20.7 5.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Mar-2026 22:50:00 23:50:00 0.069 0.071 -2.42% Date Printed: 3/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 3/22/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .019 .3 13.3 13.6 .0 01:00 .023 .3 10.5 10.9 .0 02:00 .027 .2 5.7 5.9 .0 03:00 .033 .1 3.6 3.8 .0 04:00 .029 .1 4.4 4.6 .0 05:00 .027 .1 3.6 3.8 .0 06:00 .018 .2 5.6 5.9 .0 07:00 .020 .7 6.6 7.4 .0 08:00 .030 1.0 5.1 6.1 .1 09:00 .035 1.1 4.5 5.7 .1 10:00 .043 .5 2.6 3.2 .2 11:00 .047 .2 1.8 2.1 .2 12:00 .049 .2 2.0 2.3 .2 13:00 .049 .2 2.0 2.2 .2 14:00 .050 .2 2.4 2.6 .1 15:00 .051 .2 C 3.0 C 3.2 C .2 16:00 .048 C C C .2 17:00 .049 .1 C 4.0 C 4.2 C .2 18:00 .046 .0 5.3 5.4 .3 19:00 .043 .0 5.5 5.5 .2 C 20:00 .041 .0 5.3 5.4 C 21:00 .040 .0 4.8 4.9 .2 C 22:00 .040 C .0 3.9 4.0 .2 23:00 C .0 4.0 4.1 .2 Average .037 .2 4.7 5.0 .1 Max .051 1.1 13.3 13.6 .3 Max Hour 15:00 09:00 00:00 00:00 18:00 Min .018 .0 1.8 2.1 .0 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-Mar-2026 15:46:00 16:11:00 67.3 70 -3.76% GPT-PS 22-Mar-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 22-Mar-2026 15:46:00 16:38:00 217.8 225 -3.16% GPT-PREC 22-Mar-2026 15:46:00 17:08:00 152.5 155 -1.58% NO2 GPT-PREC 22-Mar-2026 15:46:00 17:08:00 66.5 70 -4.89% NO2 Precision NO2_Diff PRECDIFF 22-Mar-2026 17:15:00 17:15:05 65.3 66.58 -1.85% NOx NOx_Auto NO-PREC 22-Mar-2026 15:46:00 16:11:00 67.9 70 -2.95% Ozone O3_Auto ZERO 22-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Mar-2026 22:50:00 23:50:00 0.061 0.07 -11.57% SO2 SO2_Auto ZERO 22-Mar-2026 19:46:00 20:11:00 0 0.0 .03 SPAN 22-Mar-2026 19:46:00 20:36:00 86.8 90 -3.45% PREC 22-Mar-2026 19:46:00 21:01:00 38.4 40 -3.78% Date Printed: 3/23/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 3/22/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 28.9 39.2 10.1 01:00 26.9 35.9 8.9 02:00 22.5 30.1 7.4 03:00 19.0 25.9 6.7 04:00 17.5 23.5 6.0 05:00 16.6 22.2 5.5 06:00 17.7 24.2 6.5 07:00 17.5 23.7 6.1 08:00 15.5 21.5 5.6 09:00 16.0 22.9 6.3 10:00 16.3 26.3 9.0 11:00 19.4 31.9 11.0 12:00 20.2 33.1 11.2 13:00 16.8 29.2 10.8 14:00 13.9 25.3 10.0 15:00 14.1 25.9 10.3 16:00 12.8 23.6 9.4 17:00 12.6 23.0 9.2 18:00 13.3 24.8 10.4 19:00 12.8 22.4 8.6 20:00 13.4 23.3 9.1 21:00 14.6 26.1 10.6 22:00 15.2 25.3 9.3 23:00 16.0 27.1 10.3 Average 17.0 26.5 8.6 Max 28.9 39.2 11.2 Max Hour 00:00 00:00 12:00 Min 12.6 21.5 5.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.78% Date Printed: 3/23/2026 01:30 Daily Summary Report Site: Union Cross 3/22/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .040 733.1 62.2 54.6 01:00 .036 733.0 61.2 54.9 02:00 .038 732.9 60.8 53.7 03:00 .037 732.8 60.0 53.3 04:00 .036 733.0 59.1 54.9 05:00 .029 733.3 58.2 55.3 06:00 .023 733.3 57.7 55.6 07:00 .026 733.6 58.5 55.4 08:00 .034 733.6 62.0 55.4 09:00 .039 733.8 67.7 56.3 10:00 .047 733.6 74.0 58.3 11:00 .053 733.2 77.6 59.6 12:00 .055 732.6 80.2 60.5 13:00 .056 731.7 82.4 60.6 14:00 .058 730.8 84.1 61.0 15:00 .058 730.5 84.4 60.9 16:00 .058 730.2 84.9 60.1 17:00 .057 730.1 84.4 59.6 18:00 .052 730.2 81.7 58.2 19:00 .049 730.4 79.0 56.7 20:00 .044 730.9 76.7 55.8 21:00 .046 730.8 75.5 55.5 22:00 .047 C 730.3 73.9 54.7 23:00 C 729.8 72.9 54.5 Average .044 731.9 71.6 56.8 Max .058 733.8 84.9 61.0 Max Hour 16:00 09:00 16:00 14:00 Min .023 729.8 57.7 53.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 22-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 22-Mar-2026 22:50:00 23:50:00 0.069 0.07 -.87% 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