Date Printed: 10/21/2026 01:30 Daily Summary Report Site: Clemmons Middle 10/20/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .011 3.5 6.5 3.0 01:00 .009 3.4 6.7 3.2 02:00 .009 3.5 6.5 3.0 03:00 .006 3.5 6.8 3.3 04:00 .006 4.0 7.9 3.9 05:00 .004 3.9 9.5 5.5 06:00 .003 4.0 10.0 5.9 07:00 .005 4.3 13.1 8.7 08:00 .013 B B B B 09:00 .022 B B B 10:00 .035 2.7 B 9.2 B 6.5 B 11:00 .045 1.7 7.5 5.7 12:00 .046 1.8 6.2 4.4 13:00 .048 1.5 5.3 3.7 14:00 .050 1.5 6.0 4.4 15:00 .050 1.7 5.6 3.9 16:00 .045 2.0 6.1 4.1 17:00 .031 2.5 7.3 4.8 18:00 .024 2.7 8.0 5.2 19:00 .016 3.2 9.3 6.0 20:00 .011 3.6 9.4 5.8 21:00 .009 4.1 9.5 5.4 22:00 .011 C 4.0 8.4 4.4 23:00 C 3.7 7.5 3.7 Average .022 3.0 7.8 4.7 Max .050 4.3 13.1 8.7 Max Hour 15:00 07:00 07:00 07:00 Min .003 1.5 5.3 3.0 Count 23 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 20-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 20-Oct-2026 22:50:00 23:50:00 0.069 0.07 -.06% Date Printed: 10/21/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 10/20/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .007 .9 14.5 15.4 .1 01:00 .003 3.3 18.4 21.8 .1 02:00 .003 2.7 15.9 18.7 .1 03:00 .002 5.7 18.4 24.2 .2 04:00 .003 5.3 16.5 21.8 .2 05:00 .002 21.3 16.7 38.1 .4 06:00 .002 29.6 14.7 44.4 .6 07:00 .003 35.0 11.8 46.9 .6 08:00 .011 25.5 17.6 43.2 .6 09:00 .034 2.1 5.8 8.0 .5 10:00 .042 .3 1.4 1.8 .3 11:00 .044 .2 1.2 1.4 .3 D 12:00 .047 .2 1.4 1.6 D 13:00 .049 .1 1.3 1.5 D 14:00 .051 .2 1.5 1.7 .3 15:00 .052 .2 C 1.5 C 1.7 C .3 16:00 .051 C C C .4 17:00 .045 .0 C 5.3 C 5.4 C .3 18:00 .037 .2 9.4 9.7 .4 19:00 .032 .5 10.9 11.4 .3 C 20:00 .019 .6 14.7 15.4 C 21:00 .019 .9 14.9 15.9 .3 C 22:00 .018 C .7 11.2 12.0 .2 23:00 C .0 2.9 3.0 .2 Average .025 5.8 9.9 15.8 .3 Max .052 35.0 18.4 46.9 .6 Max Hour 15:00 07:00 03:00 07:00 08:00 Min .002 .0 1.2 1.4 .1 Count 23 23 23 23 21 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 20-Oct-2026 15:46:00 16:11:00 69.3 70 -.95% GPT-PS 20-Oct-2026 15:46:00 16:18:00 0.5 0.0 .6 GPTZ 20-Oct-2026 15:46:00 16:38:00 224.1 225 -.4% GPT-PREC 20-Oct-2026 15:46:00 17:08:00 156.5 155 1.02% NO2 GPT-PREC 20-Oct-2026 15:46:00 17:08:00 67.8 70 -3.12% NO2 Precision NO2_Diff PRECDIFF 20-Oct-2026 17:15:00 17:15:05 67.5 67.819 -.44% NOx NOx_Auto NO-PREC 20-Oct-2026 15:46:00 16:11:00 69.5 70 -.7% Ozone O3_Auto ZERO 20-Oct-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 20-Oct-2026 22:50:00 23:50:00 0.068 0.07 -2.24% SO2 SO2_Auto ZERO 20-Oct-2026 19:46:00 20:11:00 0 0.0 .08 SPAN 20-Oct-2026 19:46:00 20:36:00 87.1 90 -3.18% PREC 20-Oct-2026 19:46:00 21:01:00 38.3 40 -4.02% Date Printed: 10/21/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 10/20/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.0 13.3 7.8 01:00 8.1 17.5 10.1 02:00 6.8 14.5 8.3 03:00 6.2 16.6 11.1 04:00 5.4 13.0 8.2 05:00 5.7 16.8 11.9 06:00 6.0 14.4 9.1 07:00 6.7 20.1 14.1 08:00 5.5 21.0 15.6 09:00 3.0 10.3 7.2 10:00 1.8 6.5 4.6 11:00 1.7 6.6 4.8 12:00 1.7 7.6 5.7 13:00 1.5 5.2 3.5 14:00 1.6 6.1 4.3 15:00 1.7 6.2 4.3 16:00 2.0 7.3 5.1 17:00 2.5 6.7 4.2 18:00 3.2 7.3 4.0 19:00 3.4 8.0 4.7 20:00 5.3 11.1 5.9 21:00 5.6 11.3 5.9 22:00 5.5 9.8 4.5 23:00 3.3 6.9 3.6 Average 4.1 11.0 7.0 Max 8.1 21.0 15.6 Max Hour 01:00 08:00 08:00 Min 1.5 5.2 3.5 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.02% Date Printed: 10/21/2026 01:30 Daily Summary Report Site: Union Cross 10/20/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .011 742.4 45.3 33.6 01:00 .006 742.1 44.7 34.1 02:00 .011 742.1 43.7 33.0 03:00 .007 742.1 41.8 33.3 04:00 .011 742.1 41.9 32.8 05:00 .010 742.1 40.2 32.3 06:00 .005 742.3 42.0 31.8 07:00 .006 742.4 45.8 31.9 08:00 .014 742.8 52.6 35.7 09:00 .031 742.8 60.2 37.6 10:00 .040 742.7 64.5 39.1 11:00 .044 742.4 67.4 40.4 12:00 .046 741.8 69.3 41.3 13:00 .049 741.2 71.0 42.9 14:00 .050 740.9 71.9 43.8 15:00 .050 740.9 72.5 44.4 16:00 .048 740.8 72.0 44.0 17:00 .041 741.0 68.1 42.0 18:00 .036 741.1 63.1 39.4 19:00 .022 741.3 60.5 37.8 20:00 .023 741.3 57.4 36.7 21:00 .019 741.3 56.3 36.3 22:00 .020 C 741.3 57.5 36.3 23:00 C 741.4 56.6 36.5 Average .026 741.7 56.9 37.3 Max .050 742.8 72.5 44.4 Max Hour 15:00 09:00 15:00 15:00 Min .005 740.8 40.2 31.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 20-Oct-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 20-Oct-2026 22:50:00 23:50:00 0.067 0.07 -3.83% 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