Date Printed: 6/12/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/11/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .016 9.3 15.4 6.0 01:00 .015 11.0 17.5 6.4 02:00 .013 11.7 17.4 5.7 03:00 .010 11.9 17.4 5.5 04:00 .006 11.7 17.7 6.0 05:00 .006 B 11.1 18.7 7.6 06:00 .011 12.0 52.8 40.8 07:00 .018 8.8 17.2 8.3 08:00 .030 8.2 16.9 8.6 09:00 .037 8.6 18.4 9.8 10:00 .041 B 8.3 17.5 9.2 11:00 .045 8.8 16.4 7.5 12:00 .042 8.9 17.0 8.0 13:00 .044 10.0 19.1 9.1 14:00 .044 10.2 18.6 8.4 15:00 .046 10.7 18.9 8.2 16:00 .047 10.4 19.9 9.4 17:00 .049 10.2 18.8 8.6 18:00 .045 9.3 17.1 7.7 19:00 .039 8.8 22.7 13.8 20:00 .035 8.7 15.7 7.0 21:00 .035 9.3 16.3 6.9 22:00 .037 C 10.6 18.4 7.8 23:00 C 10.8 17.5 6.6 Average .030 9.9 19.3 9.2 Max .049 12.0 52.8 40.8 Max Hour 17:00 06:00 06:00 06:00 Min .006 8.2 15.4 5.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 11-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 11-Jun-2026 22:50:00 23:50:00 0.067 0.07 -2.86% Date Printed: 6/12/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/11/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .2 5.9 6.1 -.3 01:00 .020 .3 9.3 9.7 .0 02:00 .020 .3 6.9 7.3 -.2 03:00 .020 .3 5.7 6.1 -.3 04:00 .018 .3 5.8 6.2 -.4 05:00 .015 .8 8.1 8.9 -.4 06:00 .015 2.3 8.6 10.9 -.3 07:00 .024 2.0 5.6 7.6 -.4 08:00 .035 1.4 4.5 6.0 -.4 09:00 .040 .3 2.4 2.8 -.4 10:00 .039 .2 1.7 1.9 -.4 11:00 .042 .2 1.5 1.8 -.4 12:00 .046 .2 1.7 1.9 -.4 13:00 .047 .1 1.8 2.0 -.4 14:00 .046 .2 2.0 2.2 -.4 15:00 .047 .2 C 2.1 C 2.3 C -.4 16:00 .040 C C C -.4 17:00 .037 1.7 C 6.9 C 8.7 C -.3 18:00 .041 1.3 6.9 8.2 -.4 19:00 .038 .7 7.7 8.4 -.4 C 20:00 .033 .2 9.6 9.9 C 21:00 .035 .3 9.2 9.6 -.2 C 22:00 .038 C .5 7.5 8.1 .0 23:00 C .8 8.3 9.1 -.2 Average .033 .6 5.6 6.3 -.3 Max .047 2.3 9.6 10.9 .0 Max Hour 15:00 06:00 20:00 06:00 22:00 Min .015 .1 1.5 1.8 -.4 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 11-Jun-2026 15:46:00 16:11:00 66.5 70 -4.87% GPT-PS 11-Jun-2026 15:46:00 16:18:00 0.5 0.0 .59 GPTZ 11-Jun-2026 15:46:00 16:38:00 215.2 225 -4.33% GPT-PREC 11-Jun-2026 15:46:00 17:08:00 150.6 155 -2.83% NO2 GPT-PREC 11-Jun-2026 15:46:00 17:08:00 65.6 70 -6.24% NO2 Precision NO2_Diff PRECDIFF 11-Jun-2026 17:15:00 17:15:05 64.6 65.629 -1.5% NOx NOx_Auto NO-PREC 11-Jun-2026 15:46:00 16:11:00 67.3 70 -3.73% Ozone O3_Auto ZERO 11-Jun-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 11-Jun-2026 22:50:00 23:50:00 0.068 0.07 -2.92% SO2 SO2_Auto ZERO 11-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.62 SPAN 11-Jun-2026 19:46:00 20:36:00 87.9 90 -2.33% PREC 11-Jun-2026 19:46:00 21:01:00 38.5 40 -3.61% Date Printed: 6/12/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/11/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 12.0 20.7 8.0 01:00 13.4 21.7 7.7 02:00 14.0 22.7 8.0 03:00 12.7 19.3 6.0 04:00 11.7 19.6 7.4 05:00 11.5 18.3 6.3 06:00 12.5 21.7 8.5 07:00 11.3 33.3 20.6 08:00 12.8 61.6 45.9 09:00 10.0 24.5 13.1 10:00 9.0 19.6 9.3 11:00 9.3 19.1 8.6 12:00 9.2 18.0 7.5 13:00 9.4 19.9 9.1 14:00 9.3 19.5 8.8 15:00 9.7 18.2 7.2 16:00 10.0 31.6 20.0 17:00 9.6 22.2 11.4 18:00 10.2 21.0 9.7 19:00 10.2 20.0 8.8 20:00 10.2 19.6 8.4 21:00 11.2 20.0 7.9 22:00 12.4 21.9 8.4 23:00 12.8 21.7 7.9 Average 11.0 23.1 11.0 Max 14.0 61.6 45.9 Max Hour 02:00 08:00 08:00 Min 9.0 18.0 6.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.61% Date Printed: 6/12/2026 01:30 Daily Summary Report Site: Union Cross 6/11/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .027 735.3 75.1 70.2 01:00 .025 735.1 73.9 70.3 02:00 .023 735.1 72.9 69.9 03:00 .020 735.2 72.0 69.8 04:00 .017 735.7 71.1 69.7 05:00 .016 735.8 70.8 69.7 06:00 .020 736.0 73.1 69.7 07:00 .024 736.1 76.6 70.4 08:00 .036 736.1 80.6 71.0 09:00 .044 735.7 84.3 71.5 10:00 .046 735.6 87.4 71.7 11:00 .042 735.3 89.4 71.4 12:00 .047 734.8 90.8 72.2 13:00 .047 734.5 92.2 72.5 14:00 .046 734.4 92.5 72.5 15:00 .047 733.9 93.6 72.6 16:00 .048 733.9 90.1 71.9 17:00 .058 733.5 92.2 73.1 18:00 .060 733.8 89.7 72.3 19:00 .048 734.0 87.0 70.8 20:00 .044 734.0 84.9 69.9 21:00 .045 734.3 83.3 70.1 22:00 .044 C 734.4 82.1 70.4 23:00 C 734.3 80.6 70.3 Average .038 734.8 82.7 70.9 Max .060 736.1 93.6 73.1 Max Hour 18:00 08:00 15:00 17:00 Min .016 733.5 70.8 69.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 11-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 11-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.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