Date Printed: 9/27/2026 01:30 Daily Summary Report Site: Clemmons Middle 9/26/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .016 3.2 6.8 3.6 01:00 .017 5.8 10.6 4.8 02:00 .020 2.9 6.6 3.6 03:00 .016 2.9 6.9 4.0 04:00 .011 2.9 6.9 4.0 05:00 .007 3.0 7.1 4.0 06:00 .010 B 2.9 7.4 4.5 07:00 .020 2.8 6.7 3.9 08:00 .024 2.7 6.3 3.6 09:00 .035 2.5 6.2 3.6 10:00 .040 2.6 6.3 3.7 11:00 .043 2.5 6.2 3.6 12:00 .047 2.6 6.4 3.7 13:00 .048 2.8 6.9 4.0 14:00 .048 2.9 6.7 3.8 15:00 .051 2.8 8.0 5.1 16:00 .050 B 2.8 7.9 5.0 17:00 .044 2.8 8.1 5.3 18:00 .040 3.0 8.6 5.5 19:00 .042 3.0 7.0 3.9 20:00 .040 3.1 6.7 3.6 21:00 .036 3.3 7.3 3.9 22:00 .032 C 3.4 7.8 4.3 23:00 C 3.6 7.5 3.9 Average .032 3.0 7.2 4.1 Max .051 5.8 10.6 5.5 Max Hour 15:00 01:00 01:00 18:00 Min .007 2.5 6.2 3.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 26-Sep-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 26-Sep-2026 22:50:00 23:50:00 0.069 0.071 -2.61% Date Printed: 9/27/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 9/26/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .021 .0 5.2 5.3 .1 01:00 .021 .0 4.2 4.2 .1 02:00 .018 .1 5.4 5.5 .1 03:00 .020 .1 3.5 3.7 .1 04:00 .016 .2 4.8 5.0 .2 05:00 .016 .1 4.5 4.6 .1 06:00 .016 .4 7.6 8.1 .1 07:00 .026 1.0 5.5 6.5 .2 08:00 .032 .8 3.6 4.4 .2 09:00 .035 .5 2.5 3.1 .2 10:00 .043 .3 1.8 2.2 .3 11:00 .046 .2 1.5 1.7 .2 12:00 .049 .2 1.5 1.7 .3 13:00 .049 .2 1.5 1.7 .3 14:00 .048 .1 1.6 1.8 .2 15:00 .049 .2 C 1.9 C 2.1 C .2 16:00 .048 C C C .2 17:00 .045 .1 C 3.1 C 3.3 C .2 18:00 .042 .0 3.8 3.8 .2 19:00 .040 .0 3.9 4.0 .2 C 20:00 .039 .0 3.2 3.2 C 21:00 .036 .0 3.0 3.0 .2 C 22:00 .035 C .0 3.3 3.3 .2 23:00 C .0 4.9 5.0 .2 Average .034 .1 3.5 3.7 .1 Max .049 1.0 7.6 8.1 .3 Max Hour 15:00 07:00 06:00 06:00 13:00 Min .016 .0 1.5 1.7 .1 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 26-Sep-2026 15:46:00 16:11:00 69.4 70 -.85% GPT-PS 26-Sep-2026 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 26-Sep-2026 15:46:00 16:38:00 225.1 225 .09% GPT-PREC 26-Sep-2026 15:46:00 17:08:00 156.9 155 1.25% NO2 GPT-PREC 26-Sep-2026 15:46:00 17:08:00 68.6 70 -1.9% NO2 Precision NO2_Diff PRECDIFF 26-Sep-2026 17:15:00 17:15:05 68.2 68.67 -.6% NOx NOx_Auto NO-PREC 26-Sep-2026 15:46:00 16:11:00 69.3 70 -.91% Ozone O3_Auto ZERO 26-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 26-Sep-2026 22:50:00 23:50:00 0.069 0.07 -1.44% SO2 SO2_Auto ZERO 26-Sep-2026 19:46:00 20:11:00 0.1 0.0 .18 SPAN 26-Sep-2026 19:46:00 20:36:00 88 90 -2.17% PREC 26-Sep-2026 19:46:00 21:01:00 38.9 40 -2.59% Date Printed: 9/27/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 9/26/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.8 7.2 3.5 01:00 4.0 7.4 3.4 02:00 3.2 6.1 2.9 03:00 3.1 6.0 3.0 04:00 3.1 6.0 3.0 05:00 3.2 6.0 2.9 06:00 3.2 6.2 3.1 07:00 2.9 7.5 4.6 08:00 3.0 6.5 3.3 09:00 2.9 8.4 5.3 10:00 2.8 7.0 4.0 11:00 2.7 7.1 4.2 12:00 2.7 7.1 4.2 13:00 2.7 7.4 4.4 14:00 3.0 6.9 3.5 15:00 2.8 7.1 4.0 16:00 2.7 6.6 3.6 17:00 3.0 7.6 4.4 18:00 3.1 6.8 3.6 19:00 3.3 6.8 3.4 20:00 3.2 7.2 3.9 21:00 3.3 7.2 3.7 22:00 3.8 7.5 3.6 23:00 3.9 7.7 3.8 Average 3.1 6.9 3.7 Max 4.0 8.4 5.3 Max Hour 01:00 09:00 09:00 Min 2.7 6.0 2.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.59% Date Printed: 9/27/2026 01:30 Daily Summary Report Site: Union Cross 9/26/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .014 736.9 51.3 42.9 01:00 .014 736.4 50.4 44.8 02:00 .012 736.0 50.4 45.2 03:00 .012 735.7 49.2 45.3 04:00 .018 735.9 50.1 44.6 05:00 .015 736.1 48.7 43.4 06:00 .016 736.1 49.3 42.4 07:00 .019 736.3 53.3 42.9 08:00 .028 736.4 59.5 44.7 09:00 .037 736.4 64.2 45.2 10:00 .042 736.2 68.0 46.4 11:00 .045 735.7 70.8 47.0 12:00 .049 735.0 73.1 47.9 13:00 .051 734.2 74.9 49.4 14:00 .051 733.5 76.3 50.8 15:00 .052 733.1 77.1 51.4 16:00 .051 733.1 77.2 51.2 17:00 .048 733.2 75.4 50.3 18:00 .045 733.4 71.5 48.2 19:00 .042 733.9 67.9 46.6 20:00 .040 734.3 65.5 45.8 21:00 .037 734.5 63.1 45.5 22:00 .036 C 734.5 61.4 46.2 23:00 C 734.2 60.2 46.7 Average .033 735.0 62.8 46.4 Max .052 736.9 77.2 51.4 Max Hour 15:00 00:00 16:00 15:00 Min .012 733.1 48.7 42.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 26-Sep-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 26-Sep-2026 22:50:00 23:50:00 0.069 0.07 -.14% 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