Date Printed: 5/16/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/15/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .028 B 2.9 5.0 2.1 01:00 .026 3.0 5.8 2.7 02:00 .020 3.0 5.6 2.5 03:00 .016 4.0 6.6 2.5 04:00 .013 3.3 6.1 2.7 05:00 .013 3.0 6.2 3.1 06:00 .018 2.9 6.9 3.9 07:00 .023 2.7 8.0 5.3 08:00 D 2.8 8.6 5.7 09:00 B 2.7 8.5 5.8 10:00 D 3.2 12.2 8.9 11:00 .049 2.8 10.5 7.6 12:00 .051 3.0 18.3 15.1 13:00 .053 2.7 11.1 8.4 14:00 .056 2.8 11.5 8.7 15:00 .058 2.8 10.0 7.2 16:00 .061 3.0 11.7 8.7 17:00 .063 3.5 12.2 8.7 18:00 .062 B 3.5 13.7 10.2 19:00 .055 4.9 37.9 32.9 20:00 .050 5.3 30.3 24.9 21:00 .046 4.8 16.8 12.0 22:00 .042 C 5.5 16.4 10.8 23:00 C 6.0 14.0 8.0 Average .040 3.5 12.2 8.6 Max .063 6.0 37.9 32.9 Max Hour 17:00 23:00 19:00 19:00 Min .013 2.7 5.0 2.1 Count 20 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-May-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 15-May-2026 22:50:00 23:50:00 0.071 0.07 2.74% Date Printed: 5/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/15/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .1 3.5 3.6 -.3 01:00 .026 .1 3.4 3.5 -.4 02:00 .026 .1 2.9 3.1 -.3 03:00 .026 .1 2.9 3.0 -.3 04:00 .023 .3 4.3 4.6 -.4 05:00 .018 .6 7.7 8.3 -.3 06:00 .017 2.9 9.0 11.9 -.3 07:00 .026 1.7 5.6 7.3 -.3 08:00 .035 .6 2.6 3.3 -.3 09:00 .041 .4 1.7 2.2 -.2 10:00 .043 .3 1.5 1.8 -.1 11:00 .045 .2 1.6 1.8 -.2 12:00 .051 .2 1.7 2.0 -.1 13:00 .054 .3 1.9 2.2 -.1 14:00 .055 .2 1.7 2.0 -.2 15:00 .055 .2 C 2.0 C 2.2 C -.3 16:00 .057 C C C -.3 17:00 .058 .2 C 2.6 C 2.8 C -.3 18:00 .060 .1 3.3 3.4 -.3 19:00 .055 .1 7.7 7.8 -.2 C 20:00 .045 .1 12.9 13.1 C 21:00 .034 .1 17.4 17.5 -.2 C 22:00 .030 C .2 18.6 18.9 -.1 23:00 C .3 15.4 15.7 -.2 Average .039 .4 5.7 6.1 -.2 Max .060 2.9 18.6 18.9 -.1 Max Hour 18:00 06:00 22:00 22:00 22:00 Min .017 .1 1.5 1.8 -.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 15-May-2026 15:46:00 16:11:00 66.6 70 -4.8% GPT-PS 15-May-2026 15:46:00 16:18:00 0.5 0.0 .59 GPTZ 15-May-2026 15:46:00 16:38:00 215.7 225 -4.09% GPT-PREC 15-May-2026 15:46:00 17:08:00 150.7 155 -2.74% NO2 GPT-PREC 15-May-2026 15:46:00 17:08:00 65.6 70 -6.23% NO2 Precision NO2_Diff PRECDIFF 15-May-2026 17:15:00 17:15:05 65 65.638 -.9% NOx NOx_Auto NO-PREC 15-May-2026 15:46:00 16:11:00 66.8 70 -4.54% Ozone O3_Auto ZERO 15-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-May-2026 22:50:00 23:50:00 0.067 0.07 -3.86% SO2 SO2_Auto ZERO 15-May-2026 19:46:00 20:11:00 -0.4 0.0 -.48 SPAN 15-May-2026 19:46:00 20:36:00 89 90 -1.07% PREC 15-May-2026 19:46:00 21:01:00 39.1 40 -2.18% Date Printed: 5/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/15/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.3 6.4 3.2 01:00 3.1 6.4 3.4 02:00 3.3 5.7 2.6 03:00 3.1 6.3 3.3 04:00 3.0 5.7 2.8 05:00 3.1 6.0 3.1 06:00 3.4 6.9 3.6 07:00 2.9 6.4 3.5 08:00 2.6 7.7 5.1 09:00 2.8 8.3 5.4 10:00 2.8 10.6 7.6 11:00 2.8 9.1 6.2 12:00 3.0 10.4 7.2 13:00 3.1 10.1 6.7 14:00 2.9 10.8 7.5 15:00 2.8 11.2 8.0 16:00 2.8 11.6 8.4 17:00 3.1 11.5 8.2 18:00 3.8 11.3 7.2 19:00 4.3 15.2 10.7 20:00 5.6 19.0 13.2 21:00 5.9 15.6 9.7 22:00 7.8 19.6 11.8 23:00 8.7 17.3 8.6 Average 3.7 10.3 6.5 Max 8.7 19.6 13.2 Max Hour 23:00 22:00 20:00 Min 2.6 5.7 2.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.18% Date Printed: 5/16/2026 01:30 Daily Summary Report Site: Union Cross 5/15/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .022 736.8 45.3 36.8 01:00 .023 736.7 44.9 36.6 02:00 .022 736.6 44.7 36.5 03:00 .023 736.7 44.2 36.3 04:00 .022 736.8 44.5 36.1 05:00 .019 737.4 43.9 36.3 06:00 .019 738.0 46.1 37.5 07:00 .024 738.4 52.1 39.9 08:00 .034 738.8 57.6 40.3 09:00 .041 738.6 60.4 39.7 10:00 .045 738.9 63.0 40.9 11:00 .048 738.7 65.4 42.4 12:00 .051 738.1 68.0 44.2 13:00 .053 737.6 70.0 45.3 14:00 .055 737.2 71.6 45.8 15:00 .056 736.7 73.0 46.9 16:00 .057 736.6 73.5 47.3 17:00 .059 736.8 72.8 47.0 18:00 .060 737.1 71.3 46.8 19:00 .053 737.5 67.7 45.2 20:00 .052 737.9 65.5 43.8 21:00 .050 738.5 63.5 42.6 22:00 .050 C 738.8 62.2 42.5 23:00 C 738.9 60.6 41.9 Average .040 737.6 59.6 41.6 Max .060 738.9 73.5 47.3 Max Hour 18:00 23:00 16:00 16:00 Min .019 736.6 43.9 36.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-May-2026 22:50:00 23:50:00 0.07 0.07 1.28% 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