Date Printed: 4/21/2026 10:01 Daily Summary Report Site: Clemmons Middle 4/21/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .049 3.2 7.5 4.3 01:00 .048 3.1 6.4 3.3 02:00 .044 3.1 6.5 3.4 03:00 .036 3.3 6.9 3.6 04:00 .027 3.4 7.2 3.8 05:00 .021 3.7 8.7 5.0 06:00 .020 4.6 23.6 19.0 07:00 .034 4.0 10.3 6.3 08:00 .042 3.8 9.4 5.5 09:00 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 .035 3.5 9.6 6.0 Max .049 4.6 23.6 19.0 Max Hour 00:00 06:00 06:00 06:00 Min .020 3.1 6.4 3.3 Count 9 9 9 9 Total Date Printed: 4/21/2026 10:01 Daily Summary Report Site: Hattie Avenue (A) 4/21/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .049 .0 1.9 1.9 .1 01:00 .047 .0 2.2 2.2 .1 02:00 .043 .0 2.3 2.4 .0 03:00 .041 .0 2.5 2.5 .0 04:00 .037 .0 2.7 2.8 .0 05:00 .035 .1 3.2 3.3 .0 06:00 .035 .4 4.0 4.4 .0 07:00 .038 .7 3.3 4.1 .0 08:00 .042 .6 2.4 3.1 .0 09:00 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 .040 .2 2.7 2.9 .0 Max .049 .7 4.0 4.4 .1 Max Hour 00:00 07:00 06:00 06:00 01:00 Min .035 .0 1.9 1.9 .0 Count 9 9 9 9 9 Total Date Printed: 4/21/2026 10:01 Daily Summary Report Site: Hattie Avenue (B) 4/21/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.3 7.1 4.0 01:00 3.1 6.7 3.7 02:00 3.3 7.0 3.9 03:00 3.4 6.8 3.7 04:00 3.5 7.2 4.0 05:00 3.7 7.1 3.7 06:00 4.0 12.4 9.0 07:00 3.8 10.2 6.8 08:00 3.7 10.0 6.6 09:00 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 3.5 8.2 5.0 Max 4.0 12.4 9.0 Max Hour 06:00 06:00 06:00 Min 3.1 6.7 3.7 Count 9 9 9 Total Date Printed: 4/21/2026 10:01 Daily Summary Report Site: Union Cross 4/21/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .049 743.3 48.7 24.6 01:00 .045 743.5 46.4 24.2 02:00 .042 743.5 43.9 24.3 03:00 .033 743.8 41.2 25.0 04:00 .031 744.2 39.6 25.2 05:00 .031 744.7 38.1 24.9 06:00 .029 745.5 39.0 25.2 07:00 .037 746.0 43.4 25.7 08:00 .042 746.1 47.3 26.1 09:00 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 .037 744.5 43.0 25.0 Max .049 746.1 48.7 26.1 Max Hour 00:00 08:00 00:00 08:00 Min .029 743.3 38.1 24.2 Count 9 9 9 9 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