Date Printed: 2/20/2026 10:01 Daily Summary Report Site: Clemmons Middle 2/20/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 D 16.0 23.0 7.0 01:00 D 10.2 14.9 4.7 02:00 D 6.6 9.2 2.6 03:00 D 6.7 9.3 2.6 04:00 D 6.7 9.6 2.9 05:00 D 8.0 11.6 3.5 06:00 D 7.7 12.4 4.6 07:00 D 7.2 14.7 7.4 08:00 D 6.8 13.1 6.2 09:00 D 6.7 12.4 5.7 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average 8.2 13.0 4.7 Max D 16.0 23.0 7.4 Max Hour 00:00 00:00 07:00 Min D 6.6 9.2 2.6 Count 0 10 10 10 Total Date Printed: 2/20/2026 10:01 Daily Summary Report Site: Hattie Avenue (A) 2/20/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 B .1 3.2 3.4 .0 01:00 B .2 6.0 6.2 .0 02:00 B .2 6.1 6.4 .0 03:00 B .3 5.2 5.5 .0 04:00 B .3 4.6 5.0 .0 05:00 B .4 4.4 4.8 .0 06:00 B 1.0 5.4 6.4 .0 07:00 B 1.0 5.4 6.4 .0 08:00 B 2.9 6.5 9.5 .0 09:00 B 3.2 7.3 10.5 .0 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average .9 5.4 6.4 .0 Max B 3.2 7.3 10.5 .0 Max Hour 09:00 09:00 09:00 09:00 Min B .1 3.2 3.4 .0 Count 0 10 10 10 10 Total Date Printed: 2/20/2026 10:01 Daily Summary Report Site: Hattie Avenue (B) 2/20/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 8.5 12.0 3.4 01:00 5.3 7.1 1.8 02:00 5.4 7.0 1.7 03:00 5.4 7.4 2.1 04:00 5.4 6.9 1.5 05:00 5.9 7.6 1.7 06:00 5.5 7.6 2.2 07:00 5.6 8.4 2.9 08:00 6.5 10.8 4.4 09:00 6.5 11.7 5.3 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average 6.0 8.6 2.7 Max 8.5 12.0 5.3 Max Hour 00:00 00:00 09:00 Min 5.3 6.9 1.5 Count 10 10 10 Total Date Printed: 2/20/2026 10:01 Daily Summary Report Site: Union Cross 2/20/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 B 730.7 55.9 55.9 01:00 B 730.6 51.3 51.3 02:00 B 730.3 49.1 49.1 03:00 B 729.5 48.3 48.3 04:00 B 728.9 47.7 47.7 05:00 B 728.4 47.7 47.7 06:00 B 728.4 47.6 47.6 07:00 B 728.4 46.9 46.9 08:00 B 728.8 47.9 47.9 09:00 B 730.1 46.6 46.6 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Average 729.4 48.9 48.9 Max B 730.7 55.9 55.9 Max Hour 00:00 00:00 00:00 Min B 728.4 46.6 46.6 Count 0 10 10 10 Total 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