Date Printed: 6/13/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/12/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .031 10.8 18.5 7.6 01:00 .031 11.0 17.7 6.7 02:00 .022 11.7 17.8 6.0 03:00 .021 11.5 18.1 6.5 04:00 .018 B 11.4 17.2 5.8 05:00 .013 12.0 18.3 6.2 06:00 .017 12.2 23.7 11.5 07:00 .027 10.9 17.9 6.9 08:00 .036 10.0 17.1 7.1 09:00 .039 8.9 14.3 5.3 10:00 .042 9.4 14.9 5.5 11:00 .042 9.6 15.9 6.3 12:00 .045 10.5 17.1 6.6 13:00 .044 9.8 16.1 6.3 14:00 .042 9.8 15.1 5.3 15:00 .043 10.4 16.4 5.9 16:00 .044 B 10.4 16.5 6.0 17:00 .047 11.5 18.1 6.6 18:00 .046 11.5 18.3 6.8 19:00 .044 11.0 28.1 17.0 20:00 .036 5.8 15.8 10.0 21:00 .026 B 5.9 14.4 8.4 22:00 .025 C 5.8 13.2 7.4 23:00 C 5.7 13.7 7.9 Average .033 9.8 17.2 7.3 Max .047 12.2 28.1 17.0 Max Hour 17:00 06:00 19:00 19:00 Min .013 5.7 13.2 5.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 12-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.71% Date Printed: 6/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/12/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .033 .7 8.3 9.0 -.3 01:00 .029 .8 7.9 8.7 -.4 02:00 .025 .7 7.9 8.6 -.4 03:00 .024 .4 6.7 7.2 -.4 04:00 .022 .3 6.9 7.2 -.4 05:00 .013 1.3 11.9 13.2 -.4 06:00 .016 3.5 12.3 15.8 -.3 07:00 .031 1.8 7.2 9.1 -.4 08:00 .038 1.0 3.5 4.5 -.4 09:00 .041 .8 2.6 3.5 -.4 10:00 .043 .6 2.3 3.0 -.4 11:00 .043 .6 2.1 2.8 -.4 12:00 .044 .3 1.9 2.3 -.4 13:00 .045 .4 2.0 2.4 -.4 14:00 .045 .3 2.0 2.3 -.4 15:00 .043 .3 C 2.1 C 2.4 C -.4 16:00 .045 C C C -.4 17:00 .045 .2 C 2.6 C 2.9 C -.4 18:00 .046 .1 3.3 3.4 -.4 19:00 .043 .2 3.3 3.5 -.5 C 20:00 .040 .0 4.2 4.3 C 21:00 .038 .0 4.9 5.0 -.4 C 22:00 .036 C .0 4.9 5.0 -.5 23:00 C .1 4.8 4.9 -.5 Average .036 .6 5.0 5.6 -.4 Max .046 3.5 12.3 15.8 -.3 Max Hour 18:00 06:00 06:00 06:00 06:00 Min .013 .0 1.9 2.3 -.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 12-Jun-2026 15:46:00 16:11:00 66.6 70 -4.79% GPT-PS 12-Jun-2026 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 12-Jun-2026 15:46:00 16:38:00 215.3 225 -4.27% GPT-PREC 12-Jun-2026 15:46:00 17:08:00 150.8 155 -2.68% NO2 GPT-PREC 12-Jun-2026 15:46:00 17:08:00 65.2 70 -6.75% NO2 Precision NO2_Diff PRECDIFF 12-Jun-2026 17:15:00 17:15:05 64.5 65.275 -1.13% NOx NOx_Auto NO-PREC 12-Jun-2026 15:46:00 16:11:00 67.2 70 -3.89% Ozone O3_Auto ZERO 12-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.49% SO2 SO2_Auto ZERO 12-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.63 SPAN 12-Jun-2026 19:46:00 20:36:00 87.6 90 -2.66% PREC 12-Jun-2026 19:46:00 21:01:00 38.5 40 -3.64% Date Printed: 6/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/12/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 13.2 22.0 7.8 01:00 13.3 22.4 8.2 02:00 13.0 22.4 8.5 03:00 13.3 22.2 8.1 04:00 13.8 21.5 6.9 05:00 13.8 23.9 9.3 06:00 13.7 22.5 7.8 07:00 12.8 22.7 8.8 08:00 11.5 20.1 7.4 09:00 10.4 20.5 8.8 10:00 10.3 19.6 8.0 11:00 9.7 17.7 6.8 12:00 10.3 18.9 7.2 13:00 9.8 19.4 8.1 14:00 9.8 19.0 7.7 15:00 9.8 19.1 7.8 16:00 10.3 18.3 6.6 17:00 10.3 20.4 8.7 18:00 11.1 20.0 7.6 19:00 8.3 21.5 12.0 20:00 6.3 14.1 7.1 21:00 6.1 14.0 7.3 22:00 6.2 12.7 6.0 23:00 6.2 12.9 6.3 Average 10.5 19.4 7.8 Max 13.8 23.9 12.0 Max Hour 05:00 05:00 19:00 Min 6.1 12.7 6.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.64% Date Printed: 6/13/2026 01:30 Daily Summary Report Site: Union Cross 6/12/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .033 734.5 79.2 70.2 01:00 .034 734.6 78.8 70.2 02:00 .033 734.5 77.9 70.2 03:00 .031 734.5 77.0 70.1 04:00 .027 734.5 75.5 70.0 05:00 .023 734.7 74.7 70.2 06:00 .025 735.1 77.2 70.8 07:00 .034 735.3 81.4 71.2 08:00 .044 735.1 85.7 71.0 09:00 .045 735.0 88.1 70.1 10:00 .047 734.9 89.4 70.5 11:00 .049 734.7 91.1 70.8 12:00 .048 734.3 92.4 71.3 13:00 .049 733.9 94.2 72.1 14:00 .047 733.3 95.1 71.7 15:00 .046 732.7 94.8 72.2 16:00 .048 732.5 94.7 72.2 17:00 .050 732.6 93.1 71.9 18:00 .054 733.0 91.8 72.4 19:00 .052 733.7 88.1 70.0 20:00 .041 734.1 83.3 66.5 21:00 .034 734.7 81.1 66.2 22:00 .033 C 735.0 79.1 65.8 23:00 C 735.1 77.3 65.5 Average .040 734.2 85.0 70.1 Max .054 735.3 95.1 72.4 Max Hour 18:00 07:00 14:00 18:00 Min .023 732.5 74.7 65.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.11% 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