Date Printed: 5/3/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/2/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .025 5.7 9.9 4.2 01:00 .025 5.9 10.3 4.4 02:00 .022 5.8 9.4 3.6 03:00 .019 5.8 9.6 3.7 04:00 .019 5.8 10.3 4.4 05:00 .017 5.8 10.0 4.1 06:00 .026 5.6 10.5 4.9 07:00 .035 5.3 11.5 6.1 08:00 .040 B 4.4 10.7 6.3 09:00 .042 3.6 8.6 5.0 10:00 .044 2.7 7.0 4.3 11:00 .045 2.6 6.8 4.2 12:00 .045 2.7 7.2 4.5 13:00 .046 B 2.6 6.2 3.5 14:00 .047 3.0 6.6 3.5 15:00 .049 2.9 7.0 4.0 16:00 .048 3.0 7.1 4.1 17:00 .047 2.9 6.9 3.9 18:00 .037 3.0 7.4 4.3 19:00 .032 3.6 7.2 3.6 20:00 .039 3.8 8.3 4.5 21:00 .038 3.4 7.3 3.9 22:00 .034 C 3.3 7.7 4.3 23:00 C 3.4 8.1 4.6 Average .035 4.0 8.4 4.3 Max .049 5.9 11.5 6.3 Max Hour 15:00 01:00 07:00 08:00 Min .017 2.6 6.2 3.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-May-2026 22:50:00 23:20:00 0.002 0.0 0.00 PREC 02-May-2026 22:50:00 23:50:00 0.071 0.07 1.96% Date Printed: 5/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/2/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .028 .1 5.1 5.3 .3 01:00 .027 .1 4.6 4.7 .2 02:00 .023 .1 4.6 4.8 .1 03:00 .017 .1 5.1 5.3 .1 04:00 .019 .1 4.8 4.9 .1 05:00 .027 .1 3.3 3.4 .1 06:00 .037 .1 2.0 2.2 .0 07:00 .040 .2 1.6 1.9 .0 08:00 .041 .2 1.6 1.9 .0 09:00 .043 .2 1.3 1.5 .0 10:00 .043 .2 1.5 1.8 .0 11:00 .042 .2 1.4 1.7 .0 12:00 .043 .3 1.5 1.8 .0 13:00 .044 .1 1.1 1.3 .0 14:00 .045 .2 1.3 1.5 .0 15:00 .043 .9 C 3.1 C 4.1 C .2 16:00 .045 C C C .2 17:00 .045 .2 C 2.8 C 3.0 C .2 18:00 .040 .1 5.0 5.1 .2 19:00 .036 .1 6.1 6.2 .2 C 20:00 .042 .0 4.3 4.4 C 21:00 .040 .0 5.5 5.6 .0 C 22:00 .032 C .1 8.9 9.0 .0 23:00 C .1 7.0 7.1 .0 Average .036 .1 3.6 3.8 .0 Max .045 .9 8.9 9.0 .3 Max Hour 17:00 15:00 22:00 22:00 00:00 Min .017 .0 1.1 1.3 .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 02-May-2026 15:46:00 16:11:00 66.9 70 -4.4% GPT-PS 02-May-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 02-May-2026 15:46:00 16:38:00 216.3 225 -3.82% GPT-PREC 02-May-2026 15:46:00 17:08:00 151.6 155 -2.15% NO2 GPT-PREC 02-May-2026 15:46:00 17:08:00 65.1 70 -6.89% NO2 Precision NO2_Diff PRECDIFF 02-May-2026 17:15:00 17:15:05 64.7 65.174 -.69% NOx NOx_Auto NO-PREC 02-May-2026 15:46:00 16:11:00 66.8 70 -4.53% Ozone O3_Auto ZERO 02-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-May-2026 22:50:00 23:50:00 0.067 0.07 -2.94% SO2 SO2_Auto ZERO 02-May-2026 19:46:00 20:11:00 0 0.0 .02 SPAN 02-May-2026 19:46:00 20:36:00 85 90 -5.52% PREC 02-May-2026 19:46:00 21:01:00 37.6 40 -5.94% Date Printed: 5/3/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/2/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 6.5 12.6 6.1 01:00 6.4 11.2 4.9 02:00 6.1 10.6 4.5 03:00 6.5 11.8 5.4 04:00 6.6 11.1 4.5 05:00 6.1 13.0 7.0 06:00 5.4 11.0 5.7 07:00 4.6 10.0 5.5 08:00 3.6 7.9 4.3 09:00 2.9 8.4 5.5 10:00 2.8 8.1 5.4 11:00 2.6 6.5 3.9 12:00 2.7 7.3 4.6 13:00 2.7 6.8 4.1 14:00 2.8 6.6 3.8 15:00 2.8 7.3 4.4 16:00 2.8 6.4 3.4 17:00 2.9 6.9 3.9 18:00 3.4 8.7 5.3 19:00 4.1 11.2 7.1 20:00 3.5 9.4 5.9 21:00 3.6 7.9 4.4 22:00 4.4 9.1 4.9 23:00 4.4 9.5 5.3 Average 4.1 9.1 4.9 Max 6.6 13.0 7.1 Max Hour 04:00 05:00 19:00 Min 2.6 6.4 3.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.94% Date Printed: 5/3/2026 01:30 Daily Summary Report Site: Union Cross 5/2/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .028 733.4 51.9 46.3 01:00 .024 733.3 52.2 46.5 02:00 .021 733.1 52.2 46.7 03:00 .016 733.6 51.9 47.0 04:00 .024 734.0 52.5 44.5 05:00 .036 733.8 52.8 40.3 06:00 .037 733.8 52.5 39.6 07:00 .034 734.0 52.2 38.9 08:00 .038 734.4 52.2 34.6 09:00 .032 734.6 52.3 33.0 10:00 .036 734.9 52.3 32.4 11:00 .040 734.5 52.4 31.6 12:00 .039 734.0 53.2 31.4 13:00 .037 733.7 53.7 32.7 14:00 .043 733.2 55.2 34.3 15:00 .046 732.6 57.8 36.0 16:00 .048 732.4 59.3 37.0 17:00 .047 732.8 58.8 37.2 18:00 .039 733.3 56.7 38.0 19:00 .032 733.9 54.4 38.5 20:00 .031 734.6 52.3 37.4 21:00 .035 735.1 50.5 33.9 22:00 .033 C 735.3 48.1 32.8 23:00 C 735.6 45.6 32.4 Average .034 733.9 53.0 37.6 Max .048 735.6 59.3 47.0 Max Hour 16:00 23:00 16:00 03:00 Min .016 732.4 45.6 31.4 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 02-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 02-May-2026 22:50:00 23:50:00 0.069 0.07 -.3% 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