Date Printed: 10/18/2025 01:30 Daily Summary Report Site: Clemmons Middle 10/17/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .005 5.2 9.6 4.3 01:00 .007 4.8 10.2 5.3 02:00 .005 4.5 8.2 3.6 03:00 .004 4.4 7.9 3.4 04:00 .005 4.4 8.4 3.9 05:00 .003 4.6 10.1 5.5 06:00 .001 4.6 11.0 6.4 07:00 .003 4.6 9.9 5.2 08:00 .010 4.7 10.8 6.1 09:00 .027 3.6 11.7 8.1 10:00 .034 3.3 11.6 8.3 11:00 .042 3.3 10.6 7.3 12:00 .045 3.5 11.4 7.8 13:00 .046 5.1 17.0 11.8 14:00 .048 3.2 11.1 7.8 15:00 .051 3.4 12.3 8.8 16:00 .050 3.7 14.6 10.8 17:00 .044 4.2 12.0 7.7 18:00 .032 5.4 27.4 22.0 19:00 .028 4.8 18.6 13.7 20:00 .022 6.7 35.4 28.6 21:00 .016 7.2 25.1 17.8 22:00 .013 C 26.1 50.3 24.2 23:00 C 17.0 31.8 14.7 Average .023 5.9 16.1 10.1 Max .051 26.1 50.3 28.6 Max Hour 15:00 22:00 22:00 20:00 Min .001 3.2 7.9 3.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Oct-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Oct-2025 22:50:00 23:50:00 0.07 0.07 .36% Date Printed: 10/18/2025 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/17/2025 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .0 1.9 2.0 .0 01:00 .028 .1 2.7 2.9 .0 02:00 .023 .1 5.0 5.2 .0 03:00 .028 .1 2.9 3.1 .0 04:00 .028 .1 3.0 3.1 .0 05:00 .023 .3 4.7 5.0 .0 06:00 .017 .7 6.9 7.7 .0 07:00 .010 5.9 11.9 17.9 .1 08:00 .027 2.2 5.9 8.2 .1 09:00 .033 2.0 5.1 7.1 .2 10:00 .037 1.5 4.4 6.0 .2 11:00 .042 1.1 4.1 5.2 .2 12:00 .046 .6 3.0 3.6 .2 13:00 .049 .4 2.9 3.3 .1 14:00 .051 .3 2.4 2.8 .1 15:00 .051 .2 C 2.4 C 2.6 C .1 16:00 .050 C C C .1 17:00 .044 .2 C 7.0 C 7.2 C .1 18:00 .024 1.7 18.8 20.6 .1 19:00 .011 2.3 25.5 27.9 .1 C 20:00 .011 .7 20.2 21.0 C 21:00 .014 .9 18.0 18.9 .1 C 22:00 .007 C 2.6 19.6 22.3 .1 23:00 C .7 17.7 18.5 .1 Average .029 1.0 8.5 9.6 .0 Max .051 5.9 25.5 27.9 .2 Max Hour 15:00 07:00 19:00 19:00 12:00 Min .007 .0 1.9 2.0 .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 17-Oct-2025 15:46:00 16:11:00 68.9 70 -1.55% GPT-PS 17-Oct-2025 15:46:00 16:18:00 0.5 0.0 .56 GPTZ 17-Oct-2025 15:46:00 16:38:00 222.4 225 -1.13% GPT-PREC 17-Oct-2025 15:46:00 17:08:00 155.2 155 .17% NO2 GPT-PREC 17-Oct-2025 15:46:00 17:08:00 68.7 70 -1.75% NO2 Precision NO2_Diff PRECDIFF 17-Oct-2025 17:15:00 17:15:05 67.1 68.775 -2.29% NOx NOx_Auto NO-PREC 17-Oct-2025 15:46:00 16:11:00 68.7 70 -1.74% Ozone O3_Auto ZERO 17-Oct-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 17-Oct-2025 22:50:00 23:50:00 0.07 0.07 .33% SO2 SO2_Auto ZERO 17-Oct-2025 19:46:00 20:11:00 -0.1 0.0 -.11 SPAN 17-Oct-2025 19:46:00 20:36:00 89.7 90 -.27% PREC 17-Oct-2025 19:46:00 21:01:00 39.9 40 -.23% Date Printed: 10/18/2025 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/17/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 2.7 6.8 4.1 01:00 2.8 5.9 3.2 02:00 3.0 7.5 4.6 03:00 2.8 6.1 3.3 04:00 2.9 7.0 4.2 05:00 2.9 5.7 2.9 06:00 3.2 7.3 4.3 07:00 3.6 9.4 5.9 08:00 3.2 9.4 6.2 09:00 2.9 12.6 9.7 10:00 2.7 12.8 10.0 11:00 3.0 11.6 8.4 12:00 3.2 10.3 6.9 13:00 3.3 12.1 8.5 14:00 3.0 11.1 7.8 15:00 3.0 9.2 5.9 16:00 3.4 14.5 10.8 17:00 3.7 11.5 7.6 18:00 4.7 14.3 9.6 19:00 8.1 21.3 13.2 20:00 7.4 17.8 10.5 21:00 8.3 17.9 9.7 22:00 8.4 18.2 10.0 23:00 10.9 24.4 13.7 Average 4.2 11.8 7.5 Max 10.9 24.4 13.7 Max Hour 23:00 23:00 23:00 Min 2.7 5.7 2.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -.23% Date Printed: 10/18/2025 01:30 Daily Summary Report Site: Union Cross 10/17/2025 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .016 737.5 51.3 41.2 01:00 .021 737.5 51.3 39.4 02:00 .030 737.5 51.4 38.4 03:00 .030 737.7 50.0 38.0 04:00 .027 738.0 48.0 37.5 05:00 .019 738.3 45.3 38.0 06:00 .008 738.4 44.3 37.8 07:00 .009 738.8 46.8 38.9 08:00 .018 739.3 53.7 40.3 09:00 .037 739.5 59.0 38.9 10:00 .042 739.2 61.5 39.7 11:00 .046 738.8 63.6 41.3 12:00 .050 738.0 65.2 42.9 13:00 .052 737.4 66.8 44.1 14:00 .053 736.9 68.4 45.6 15:00 .053 B 736.5 69.1 46.8 16:00 .051 736.1 68.6 47.0 17:00 .043 736.3 64.9 45.7 18:00 .033 736.3 60.0 44.3 19:00 .023 736.4 57.3 44.0 20:00 .025 736.5 60.0 43.8 21:00 .033 736.8 58.8 44.0 22:00 .033 C 736.9 58.0 44.1 23:00 C 736.6 56.0 44.0 Average .032 737.5 57.4 41.9 Max .053 739.5 69.1 47.0 Max Hour 15:00 09:00 15:00 16:00 Min .008 736.1 44.3 37.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 17-Oct-2025 22:50:00 23:20:00 0.001 0.0 0.00 PREC 17-Oct-2025 22:50:00 23:50:00 0.071 0.07 3.23% 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