Date Printed: 6/14/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/13/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .017 5.8 13.6 7.8 01:00 .014 5.7 13.6 7.8 02:00 .013 5.9 15.1 9.1 03:00 .012 6.2 14.9 8.6 04:00 .008 6.3 13.8 7.5 05:00 .007 6.4 12.9 6.4 06:00 .013 6.0 12.2 6.1 07:00 .020 5.7 11.9 6.2 08:00 .033 5.2 11.8 6.5 09:00 .043 5.4 11.0 5.5 10:00 .046 5.2 10.5 5.2 11:00 .048 5.3 10.8 5.5 12:00 .050 5.5 10.9 5.3 13:00 .050 5.9 17.2 11.2 14:00 .050 B 6.0 11.9 5.9 15:00 .051 6.0 12.0 5.9 16:00 .052 6.2 11.7 5.4 17:00 .052 6.1 11.2 5.1 18:00 .047 5.5 10.3 4.8 19:00 .039 5.6 12.0 6.4 20:00 .037 6.2 19.3 13.1 21:00 .026 6.0 12.6 6.6 22:00 .028 C 6.5 12.4 5.8 23:00 C 7.1 13.4 6.2 Average .032 5.9 12.7 6.8 Max .052 7.1 19.3 13.1 Max Hour 17:00 23:00 20:00 20:00 Min .007 5.2 10.3 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 13-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 13-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.74% Date Printed: 6/14/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/13/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .029 .1 4.7 4.8 -.5 01:00 .025 .1 5.0 5.1 -.5 02:00 .024 .1 5.6 5.8 -.5 03:00 .021 .2 6.8 7.0 -.5 04:00 .015 .3 8.8 9.2 -.5 05:00 .020 .3 4.5 4.8 -.5 06:00 .026 .8 4.4 5.2 -.5 07:00 .038 .2 1.8 2.1 -.4 08:00 .040 .2 1.4 1.6 -.4 09:00 .047 .2 1.2 1.4 -.5 10:00 .051 .1 1.2 1.3 -.5 11:00 .053 .2 1.4 1.6 -.5 12:00 .055 .1 1.5 1.6 -.5 13:00 .055 .1 1.5 1.7 -.4 14:00 .053 .1 1.4 1.6 -.5 15:00 .054 .1 C 1.5 C 1.6 C -.5 16:00 .054 C C C -.4 17:00 .054 .1 C 2.0 C 2.1 C -.4 18:00 .054 .1 2.2 2.3 -.5 19:00 .049 .1 2.5 2.7 -.4 C 20:00 .045 .1 3.8 3.9 C 21:00 .041 .1 4.9 5.0 -.4 C 22:00 .044 C .1 3.5 3.6 -.4 23:00 C .1 2.7 2.8 -.4 Average .041 .1 3.2 3.4 -.4 Max .055 .8 8.8 9.2 -.4 Max Hour 13:00 06:00 04:00 04:00 23:00 Min .015 .1 1.2 1.3 -.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 13-Jun-2026 15:46:00 16:11:00 66.4 70 -5.07% GPT-PS 13-Jun-2026 15:46:00 16:18:00 0.4 0.0 .42 GPTZ 13-Jun-2026 15:46:00 16:38:00 215 225 -4.44% GPT-PREC 13-Jun-2026 15:46:00 17:08:00 150 155 -3.19% NO2 GPT-PREC 13-Jun-2026 15:46:00 17:08:00 65.8 70 -5.96% NO2 Precision NO2_Diff PRECDIFF 13-Jun-2026 17:15:00 17:15:05 64.9 65.828 -1.32% NOx NOx_Auto NO-PREC 13-Jun-2026 15:46:00 16:11:00 66.6 70 -4.76% Ozone O3_Auto ZERO 13-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.51% SO2 SO2_Auto ZERO 13-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.63 SPAN 13-Jun-2026 19:46:00 20:36:00 87.6 90 -2.6% PREC 13-Jun-2026 19:46:00 21:01:00 38.4 40 -3.89% Date Printed: 6/14/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/13/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.9 14.5 8.0 01:00 6.0 14.3 7.8 02:00 6.4 15.7 8.9 03:00 6.4 15.5 8.6 04:00 7.0 17.8 10.3 05:00 7.0 15.3 7.8 06:00 6.7 14.6 7.3 07:00 6.3 14.2 7.3 08:00 7.3 13.9 6.0 09:00 6.1 13.3 6.5 10:00 6.0 12.8 6.1 11:00 6.2 13.4 6.5 12:00 6.2 13.0 6.0 13:00 6.5 15.2 7.8 14:00 6.2 13.9 6.9 15:00 6.2 13.3 6.2 16:00 6.1 12.6 5.7 17:00 6.0 12.6 5.8 18:00 5.8 11.9 5.4 19:00 6.7 14.9 7.4 20:00 7.7 15.6 7.2 21:00 8.3 15.7 6.6 22:00 7.5 15.0 6.8 23:00 7.5 15.8 7.6 Average 6.5 14.3 7.1 Max 8.3 17.8 10.3 Max Hour 21:00 04:00 04:00 Min 5.8 11.9 5.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.89% Date Printed: 6/14/2026 01:30 Daily Summary Report Site: Union Cross 6/13/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .025 735.0 75.9 65.4 01:00 .023 734.8 74.5 65.4 02:00 .020 734.7 73.5 65.5 03:00 .021 734.8 73.5 65.7 04:00 .020 735.0 72.3 65.7 05:00 .014 735.3 71.6 65.9 06:00 .020 735.9 75.1 66.9 07:00 .037 736.3 78.8 67.4 08:00 .037 736.9 79.9 67.4 09:00 .047 736.8 82.3 67.3 10:00 .048 736.5 84.1 67.8 11:00 .052 736.3 86.3 68.1 12:00 .056 735.8 88.0 68.7 13:00 .057 735.4 89.1 69.1 14:00 .057 735.0 91.2 70.2 15:00 .056 734.5 90.8 69.9 16:00 .056 734.1 90.7 69.9 17:00 .054 733.8 90.6 69.8 18:00 .054 734.1 90.1 69.4 19:00 .047 734.7 87.4 69.4 20:00 .044 734.9 85.3 68.5 21:00 .038 735.3 83.1 67.6 22:00 .037 C 735.4 81.5 66.2 23:00 C 735.3 80.5 64.3 Average .040 735.2 82.3 67.5 Max .057 736.9 91.2 70.2 Max Hour 14:00 08:00 14:00 14:00 Min .014 733.8 71.6 64.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.16% 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