Date Printed: 7/14/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/13/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .039 4.3 9.1 4.8 01:00 .038 3.9 9.4 5.4 02:00 .033 4.0 10.9 6.8 03:00 .027 3.9 10.8 6.8 04:00 .026 4.2 9.9 5.7 05:00 .025 4.2 9.8 5.5 06:00 .026 3.5 9.1 5.6 07:00 .025 3.4 7.9 4.5 08:00 .020 3.3 8.9 5.5 09:00 .019 2.7 5.9 3.2 10:00 .021 2.8 7.1 4.2 11:00 .025 2.8 7.2 4.3 12:00 .024 2.3 13.2 10.8 13:00 .027 3.1 12.7 9.5 14:00 .027 5.3 11.0 5.6 15:00 .027 5.6 11.0 5.4 16:00 .027 B 5.9 11.3 5.3 17:00 .027 6.1 12.6 6.5 18:00 .024 5.9 12.6 6.7 19:00 .025 6.1 12.9 6.7 20:00 .025 6.8 16.1 9.2 21:00 .022 6.7 19.2 12.5 22:00 .023 C 6.4 16.1 9.7 23:00 C 6.7 16.5 9.8 Average .026 4.5 11.3 6.6 Max .039 6.8 19.2 12.5 Max Hour 00:00 20:00 21:00 21:00 Min .019 2.3 5.9 3.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Jul-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 13-Jul-2026 22:50:00 23:50:00 0.067 0.07 -2.89% Date Printed: 7/14/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/13/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .044 .1 1.3 1.4 .0 01:00 .043 .1 1.4 1.5 .0 02:00 .042 .1 1.6 1.7 .0 03:00 .039 .1 1.7 1.9 .1 04:00 .032 .2 1.8 2.1 .0 05:00 .028 .3 2.0 2.3 .0 06:00 .027 .4 1.9 2.3 .0 07:00 .024 .5 2.0 2.6 .0 08:00 .020 .7 1.9 2.6 .0 09:00 .020 .8 1.9 2.7 .1 10:00 .023 .7 1.8 2.5 .0 11:00 .022 .7 1.9 2.6 .0 12:00 .026 .3 1.7 2.1 .0 13:00 .026 .4 1.7 2.1 .0 14:00 .029 .4 1.3 1.7 .1 15:00 .030 .4 C 1.2 C 1.6 C .1 16:00 .033 C C C .1 17:00 .033 .4 C 1.7 C 2.1 C .1 18:00 .031 .4 1.8 2.2 .1 19:00 .029 .3 2.1 2.4 .1 C 20:00 .027 .3 2.8 3.1 C 21:00 .024 .3 3.7 4.1 .2 C 22:00 .024 C .3 2.9 3.2 .4 23:00 C .3 3.1 3.4 .6 Average .029 .3 1.9 2.3 .0 Max .044 .8 3.7 4.1 .6 Max Hour 00:00 09:00 21:00 21:00 23:00 Min .020 .1 1.2 1.4 .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 13-Jul-2026 15:46:00 16:11:00 65.8 70 -5.92% GPT-PS 13-Jul-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 13-Jul-2026 15:46:00 16:38:00 212.9 225 -5.36% GPT-PREC 13-Jul-2026 15:46:00 17:08:00 148.1 155 -4.41% NO2 GPT-PREC 13-Jul-2026 15:46:00 17:08:00 65.3 70 -6.65% NO2 Precision NO2_Diff PRECDIFF 13-Jul-2026 17:15:00 17:15:05 64.7 65.343 -.87% NOx NOx_Auto NO-PREC 13-Jul-2026 15:46:00 16:11:00 65.7 70 -6.05% Ozone O3_Auto ZERO 13-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Jul-2026 22:50:00 23:50:00 0.067 0.07 -3.22% SO2 SO2_Auto ZERO 13-Jul-2026 19:46:00 20:11:00 0 0.0 -.05 SPAN 13-Jul-2026 19:46:00 20:36:00 90 90 .02% PREC 13-Jul-2026 19:46:00 21:01:00 39.7 40 -.58% Date Printed: 7/14/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/13/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 5.3 10.3 4.8 01:00 5.5 10.7 4.9 02:00 5.7 10.5 4.6 03:00 5.8 10.7 4.6 04:00 5.7 12.9 6.9 05:00 4.5 11.2 6.5 06:00 4.0 11.9 7.7 07:00 4.6 10.7 5.8 08:00 4.1 9.5 5.2 09:00 3.7 8.2 4.3 10:00 3.3 8.4 4.9 11:00 3.4 8.0 4.3 12:00 3.8 11.2 7.2 13:00 5.6 14.1 8.2 14:00 6.8 13.4 6.3 15:00 7.5 14.9 6.9 16:00 7.7 15.3 7.1 17:00 6.7 12.7 5.6 18:00 7.1 13.6 6.1 19:00 8.1 18.5 9.9 20:00 7.5 31.9 23.7 21:00 7.0 25.0 17.5 22:00 7.3 19.6 12.0 23:00 7.5 20.1 12.2 Average 5.7 13.8 7.8 Max 8.1 31.9 23.7 Max Hour 19:00 20:00 20:00 Min 3.3 8.0 4.3 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.58% Date Printed: 7/14/2026 01:30 Daily Summary Report Site: Union Cross 7/13/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .040 738.9 71.8 69.4 01:00 .038 738.8 71.9 69.5 02:00 .036 738.6 71.8 69.7 03:00 .034 738.7 71.3 70.1 04:00 .027 738.9 71.0 70.5 05:00 .027 739.1 70.6 70.3 06:00 .028 739.2 70.2 69.8 07:00 .024 739.5 70.6 70.2 08:00 .018 740.0 70.9 70.2 09:00 .020 740.0 71.5 70.8 10:00 .025 740.1 72.3 70.9 11:00 .028 740.0 71.1 70.1 12:00 .029 739.8 70.9 70.3 13:00 .032 739.7 71.9 70.2 14:00 .030 739.5 72.8 70.1 15:00 .032 739.1 74.3 69.4 16:00 .030 739.1 74.8 69.0 17:00 .031 739.0 74.5 68.5 18:00 .028 739.1 74.6 68.9 19:00 .030 739.6 74.1 68.6 20:00 .028 740.2 72.4 68.4 21:00 .024 740.6 71.4 68.6 22:00 .022 C 740.9 70.7 68.2 23:00 C 741.0 70.1 68.0 Average .028 739.5 71.9 69.5 Max .040 741.0 74.8 70.9 Max Hour 00:00 23:00 16:00 10:00 Min .018 738.6 70.1 68.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Jul-2026 22:50:00 23:50:00 0.069 0.07 -.3% 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