Date Printed: 5/31/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/30/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .020 10.1 18.7 8.5 01:00 .019 11.1 19.2 8.0 02:00 .016 11.4 18.8 7.4 03:00 .011 12.0 19.4 7.3 04:00 .008 12.1 20.6 8.4 05:00 .006 12.7 21.8 9.0 06:00 .008 12.3 19.8 7.5 07:00 .024 11.6 18.8 7.2 08:00 .036 8.3 14.3 6.0 09:00 .044 7.8 14.7 6.9 10:00 .047 B 9.4 16.2 6.8 11:00 .052 9.9 16.6 6.7 12:00 .059 B 9.4 19.3 9.8 13:00 .060 8.6 16.6 8.0 14:00 .062 7.8 15.5 7.6 15:00 .060 7.7 16.4 8.7 16:00 .060 7.8 15.1 7.3 17:00 .058 7.9 15.5 7.5 18:00 .057 8.3 15.6 7.2 19:00 .048 8.5 16.5 8.0 20:00 .040 8.2 16.8 8.5 21:00 .031 9.0 16.7 7.7 22:00 .030 C 10.5 20.9 10.3 23:00 C 5.1 14.4 9.2 Average .037 9.4 17.4 7.8 Max .062 12.7 21.8 10.3 Max Hour 14:00 05:00 05:00 22:00 Min .006 5.1 14.3 6.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-May-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 30-May-2026 22:50:00 23:50:00 0.068 0.07 -3.03% Date Printed: 5/31/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/30/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .041 .1 4.8 5.0 -.3 01:00 .036 .2 5.8 6.0 -.4 02:00 .034 .2 5.2 5.5 -.4 03:00 .031 .2 4.8 5.1 -.4 04:00 .030 .3 5.4 5.7 -.4 05:00 .019 .5 7.5 8.0 -.4 06:00 .023 .9 7.0 8.0 -.4 07:00 .034 .8 5.2 6.0 -.4 08:00 .040 2.2 4.5 6.8 -.4 09:00 .045 1.5 4.3 5.7 -.3 10:00 .048 .7 2.9 3.6 -.1 11:00 .056 .1 1.8 2.0 .4 12:00 .062 .3 2.8 3.2 .3 13:00 .065 .2 2.1 2.4 .2 14:00 .065 .2 2.7 3.0 .1 15:00 .066 .1 C 1.8 C 2.0 C .0 16:00 .065 C C C .0 17:00 .064 .4 C 5.7 C 6.1 C .2 18:00 .054 .5 14.1 14.7 .9 19:00 .050 .1 14.2 14.4 .8 C 20:00 .034 .2 19.3 19.5 C 21:00 .040 .2 11.3 11.5 -.1 C 22:00 .044 C .1 4.4 4.6 .0 23:00 C .1 2.9 3.1 .1 Average .045 .4 6.1 6.6 .0 Max .066 2.2 19.3 19.5 .9 Max Hour 15:00 08:00 20:00 20:00 18:00 Min .019 .1 1.8 2.0 -.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 30-May-2026 15:46:00 16:11:00 66.5 70 -4.96% GPT-PS 30-May-2026 15:46:00 16:18:00 0.4 0.0 .43 GPTZ 30-May-2026 15:46:00 16:38:00 215.2 225 -4.34% GPT-PREC 30-May-2026 15:46:00 17:08:00 150.6 155 -2.79% NO2 GPT-PREC 30-May-2026 15:46:00 17:08:00 65.5 70 -6.42% NO2 Precision NO2_Diff PRECDIFF 30-May-2026 17:15:00 17:15:05 64.5 65.505 -1.46% NOx NOx_Auto NO-PREC 30-May-2026 15:46:00 16:11:00 66.5 70 -4.95% Ozone O3_Auto ZERO 30-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 30-May-2026 22:50:00 23:50:00 0.067 0.07 -3.1% SO2 SO2_Auto ZERO 30-May-2026 19:46:00 20:11:00 -0.5 0.0 -.59 SPAN 30-May-2026 19:46:00 20:36:00 88.2 90 -1.98% PREC 30-May-2026 19:46:00 21:01:00 38.7 40 -3.15% Date Printed: 5/31/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/30/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 13.5 24.0 9.9 01:00 13.8 25.0 10.5 02:00 14.2 22.3 7.6 03:00 14.8 24.1 8.8 04:00 15.1 23.9 8.3 05:00 14.7 23.5 8.3 06:00 14.4 23.3 8.3 07:00 11.3 19.7 7.9 08:00 9.3 16.7 6.8 09:00 9.8 17.7 7.2 10:00 10.2 17.9 7.1 11:00 10.0 18.3 7.5 12:00 9.1 17.3 7.6 13:00 8.2 18.5 9.5 14:00 8.2 17.7 8.8 15:00 8.0 17.1 8.4 16:00 8.4 19.0 9.7 17:00 8.3 17.1 8.1 18:00 8.1 17.6 8.8 19:00 8.8 20.5 11.0 20:00 11.0 23.2 11.7 21:00 14.0 25.6 11.0 22:00 8.8 22.4 13.0 23:00 4.3 14.9 10.3 Average 10.6 20.3 9.0 Max 15.1 25.6 13.0 Max Hour 04:00 21:00 22:00 Min 4.3 14.9 6.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.15% Date Printed: 5/31/2026 01:30 Daily Summary Report Site: Union Cross 5/30/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .037 734.0 71.0 62.4 01:00 .035 733.7 69.7 62.6 02:00 .033 733.2 68.9 63.0 03:00 .024 733.2 67.3 63.2 04:00 .018 733.2 66.6 63.4 05:00 .013 733.5 66.2 63.6 06:00 .021 734.0 68.0 64.1 07:00 .032 734.3 70.9 60.8 08:00 .041 734.6 73.1 57.0 09:00 .048 734.9 74.6 54.9 10:00 .055 735.3 75.3 52.3 11:00 .055 735.1 75.4 51.8 12:00 .061 734.7 77.7 53.4 13:00 .066 734.2 80.1 54.5 14:00 .065 734.0 79.4 54.5 15:00 .062 733.8 79.3 55.2 16:00 .063 734.0 79.6 55.3 17:00 .062 734.1 79.3 55.8 18:00 .060 734.3 78.4 55.7 19:00 .051 734.7 74.6 54.1 20:00 .044 735.4 71.3 52.2 21:00 .048 736.1 72.3 52.4 22:00 .047 C 736.6 71.1 52.2 23:00 C 737.4 69.3 47.2 Average .045 734.5 73.3 56.7 Max .066 737.4 80.1 64.1 Max Hour 13:00 23:00 13:00 06:00 Min .013 733.2 66.2 47.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 30-May-2026 22:50:00 23:50:00 0.07 0.07 .66% 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