Date Printed: 6/15/2026 01:30 Daily Summary Report Site: Clemmons Middle 6/14/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .042 7.6 13.0 5.4 01:00 .039 7.9 13.8 5.8 02:00 .031 8.5 14.6 6.1 03:00 .025 8.6 13.2 4.6 04:00 .021 B 8.3 13.9 5.5 05:00 .019 8.1 13.1 5.0 06:00 .023 7.6 12.7 5.0 07:00 .033 9.0 14.2 5.1 08:00 .043 B 10.5 17.2 6.7 09:00 .050 11.1 18.1 7.0 10:00 .051 9.9 17.1 7.1 11:00 .052 9.4 15.4 6.0 12:00 .054 8.5 14.8 6.3 13:00 .064 9.1 15.1 6.0 14:00 .052 8.1 16.0 7.8 15:00 .047 6.2 15.2 9.0 16:00 .044 4.5 9.5 5.0 17:00 .045 4.7 10.5 5.7 18:00 .044 5.1 10.5 5.4 19:00 .041 4.9 10.0 5.0 20:00 .040 5.3 10.1 4.7 21:00 .033 4.7 9.7 5.0 22:00 .032 B 3.7 8.1 4.3 23:00 C 3.4 11.1 7.7 Average .040 7.2 13.2 5.8 Max .064 11.1 18.1 9.0 Max Hour 13:00 09:00 09:00 15:00 Min .019 3.4 8.1 4.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Jun-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 14-Jun-2026 22:50:00 23:50:00 0.067 0.07 -3.93% Date Printed: 6/15/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 6/14/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .044 .1 2.8 2.9 -.4 01:00 .043 .1 2.8 2.9 -.4 02:00 .040 .1 3.1 3.2 -.3 03:00 .032 .1 4.4 4.6 -.4 04:00 .030 .1 4.3 4.5 -.4 05:00 .033 .1 2.7 2.8 -.3 06:00 .032 .3 2.7 3.1 -.4 07:00 .038 .6 3.9 4.5 -.3 08:00 .048 .3 3.1 3.4 -.3 09:00 .057 .4 4.2 4.7 .0 10:00 .055 .2 2.8 3.1 -.2 11:00 .056 .2 2.4 2.6 -.2 12:00 .055 .1 2.0 2.2 -.3 13:00 .060 .1 2.0 2.2 -.3 14:00 .057 .2 2.5 2.7 -.3 15:00 .050 .3 C 2.8 C 3.1 C -.3 16:00 .046 C C C -.4 17:00 .044 .0 C 2.4 C 2.4 C -.4 18:00 .047 .1 2.4 2.5 -.4 19:00 .044 .0 2.8 2.8 -.4 C 20:00 .042 .1 5.4 5.5 C 21:00 .034 .2 7.6 7.8 .2 C 22:00 .035 C .1 3.9 4.0 -.2 23:00 C .1 2.0 2.2 -.4 Average .044 .1 3.2 3.4 -.2 Max .060 .6 7.6 7.8 .2 Max Hour 13:00 07:00 21:00 21:00 21:00 Min .030 .0 2.0 2.2 -.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 14-Jun-2026 15:46:00 16:11:00 66.8 70 -4.47% GPT-PS 14-Jun-2026 15:46:00 16:18:00 0.3 0.0 .38 GPTZ 14-Jun-2026 15:46:00 16:38:00 215.5 225 -4.2% GPT-PREC 14-Jun-2026 15:46:00 17:08:00 150.6 155 -2.82% NO2 GPT-PREC 14-Jun-2026 15:46:00 17:08:00 65.9 70 -5.73% NO2 Precision NO2_Diff PRECDIFF 14-Jun-2026 17:15:00 17:15:05 64.9 65.99 -1.63% NOx NOx_Auto NO-PREC 14-Jun-2026 15:46:00 16:11:00 67 70 -4.17% Ozone O3_Auto ZERO 14-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Jun-2026 22:50:00 23:50:00 0.067 0.07 -4.29% SO2 SO2_Auto ZERO 14-Jun-2026 19:46:00 20:11:00 -0.6 0.0 -.65 SPAN 14-Jun-2026 19:46:00 20:36:00 87.7 90 -2.49% PREC 14-Jun-2026 19:46:00 21:01:00 38.5 40 -3.69% Date Printed: 6/15/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 6/14/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.0 15.1 6.6 01:00 8.6 15.7 6.5 02:00 9.8 17.5 7.1 03:00 9.7 15.7 5.6 04:00 9.9 16.6 6.2 05:00 7.9 14.1 5.8 06:00 7.9 14.1 5.7 07:00 8.0 14.4 5.8 08:00 10.2 19.7 8.6 09:00 12.1 23.3 10.0 10:00 10.5 19.4 7.7 11:00 10.2 19.2 7.8 12:00 10.2 17.9 6.5 13:00 9.9 18.1 6.8 14:00 8.4 21.6 11.9 15:00 7.0 16.9 8.8 16:00 5.7 14.9 8.3 17:00 4.5 10.2 5.1 18:00 5.4 12.0 5.9 19:00 5.5 10.7 4.6 20:00 6.2 12.4 5.5 21:00 6.3 13.2 6.3 22:00 4.0 9.3 4.8 23:00 3.6 8.2 4.3 Average 7.8 15.4 6.7 Max 12.1 23.3 11.9 Max Hour 09:00 09:00 14:00 Min 3.6 8.2 4.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.69% Date Printed: 6/15/2026 01:30 Daily Summary Report Site: Union Cross 6/14/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .043 734.9 78.8 63.5 01:00 .037 734.6 76.4 62.9 02:00 .031 734.2 74.7 62.5 03:00 .023 733.9 71.7 62.4 04:00 .022 733.9 71.2 62.0 05:00 .020 734.1 70.3 62.3 06:00 .028 734.3 72.8 63.3 07:00 .040 734.5 77.1 64.7 08:00 .045 734.4 80.7 68.3 09:00 .047 734.1 83.1 70.5 10:00 .052 733.8 86.1 71.8 11:00 .053 733.3 87.8 71.7 12:00 .050 732.8 90.1 72.0 13:00 .053 732.0 91.9 72.0 14:00 .057 731.4 90.6 70.4 15:00 .054 731.1 86.6 68.6 16:00 .050 730.8 88.1 68.8 17:00 .048 730.7 87.5 69.3 18:00 .049 730.8 84.7 68.2 19:00 .047 730.7 81.7 68.4 20:00 .043 730.7 80.2 68.7 21:00 .038 731.0 79.8 69.7 22:00 .034 C 731.4 79.0 69.1 23:00 C 731.4 75.7 69.7 Average .041 732.7 81.1 67.5 Max .057 734.9 91.9 72.0 Max Hour 14:00 00:00 13:00 13:00 Min .020 730.7 70.3 62.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 14-Jun-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 14-Jun-2026 22:50:00 23:50:00 0.069 0.07 -.52% 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