Date Printed: 6/1/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/31/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .040 3.5 11.2 7.6 01:00 .039 3.3 10.0 6.7 02:00 .039 3.6 10.3 6.6 03:00 .040 B 3.5 13.7 10.1 04:00 .037 3.1 11.4 8.2 05:00 .033 3.0 10.4 7.3 06:00 .032 2.9 9.3 6.3 07:00 .035 3.3 10.3 6.9 08:00 .037 3.4 11.2 7.8 09:00 .038 3.3 11.0 7.6 10:00 .041 3.3 10.6 7.3 11:00 .042 3.4 10.4 7.0 12:00 .044 3.7 10.8 7.0 13:00 .043 4.0 11.3 7.3 14:00 .044 4.6 11.8 7.1 15:00 .046 5.3 12.4 7.0 16:00 .045 5.6 12.7 7.1 17:00 .044 5.5 13.8 8.2 18:00 .043 5.9 14.0 8.1 19:00 .040 B 5.5 13.3 7.7 20:00 .038 5.5 12.8 7.3 21:00 .036 5.2 12.4 7.2 22:00 .034 C 5.5 12.3 6.7 23:00 B 5.3 12.9 7.5 Average .039 4.2 11.6 7.4 Max .046 5.9 14.0 10.1 Max Hour 15:00 18:00 18:00 03:00 Min .032 2.9 9.3 6.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 31-May-2026 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 31-May-2026 22:50:00 23:50:00 0.068 0.07 -2.29% Date Printed: 6/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/31/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .042 .0 1.6 1.7 -.3 01:00 .040 .0 1.5 1.6 -.4 02:00 .042 .1 1.4 1.5 -.4 03:00 .041 .0 1.3 1.4 -.5 04:00 .037 .0 1.6 1.7 -.5 05:00 .034 .1 1.9 2.1 -.5 06:00 .034 .2 1.6 1.9 -.5 07:00 .037 .2 1.4 1.6 -.5 08:00 .039 .3 1.5 1.9 -.5 09:00 .042 .2 1.6 1.9 -.5 10:00 .044 .2 1.6 1.8 -.5 11:00 .046 .2 1.6 1.8 -.4 12:00 .050 .2 1.8 2.1 -.4 13:00 .051 .2 1.7 2.0 -.4 14:00 .049 .2 1.7 2.0 -.4 15:00 .050 .1 C 1.5 C 1.7 C -.4 16:00 .049 C C C -.4 17:00 .047 .2 C 1.9 C 2.2 C -.3 18:00 .047 .1 2.5 2.6 -.3 19:00 .044 .1 3.7 3.8 -.3 C 20:00 .039 .1 4.3 4.5 C 21:00 .037 .0 2.9 3.0 -.4 C 22:00 .036 C .1 2.9 3.0 -.4 23:00 C .1 3.1 3.3 -.4 Average .042 .1 2.0 2.2 -.4 Max .051 .3 4.3 4.5 -.3 Max Hour 13:00 08:00 20:00 20:00 19:00 Min .034 .0 1.3 1.4 -.5 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 31-May-2026 15:46:00 16:11:00 66.4 70 -5.07% GPT-PS 31-May-2026 15:46:00 16:18:00 0.5 0.0 .53 GPTZ 31-May-2026 15:46:00 16:38:00 215 225 -4.41% GPT-PREC 31-May-2026 15:46:00 17:08:00 150.3 155 -3.03% NO2 GPT-PREC 31-May-2026 15:46:00 17:08:00 65.2 70 -6.85% NO2 Precision NO2_Diff PRECDIFF 31-May-2026 17:15:00 17:15:05 64.7 65.203 -.65% NOx NOx_Auto NO-PREC 31-May-2026 15:46:00 16:11:00 66.4 70 -5.02% Ozone O3_Auto ZERO 31-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 31-May-2026 22:50:00 23:50:00 0.068 0.07 -1.94% SO2 SO2_Auto ZERO 31-May-2026 19:46:00 20:11:00 -0.7 0.0 -.7 SPAN 31-May-2026 19:46:00 20:36:00 88 90 -2.11% PREC 31-May-2026 19:46:00 21:01:00 38.5 40 -3.52% Date Printed: 6/1/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/31/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 3.4 11.1 7.6 01:00 3.2 11.7 8.4 02:00 3.4 14.0 10.6 03:00 3.0 13.8 10.8 04:00 2.8 13.0 10.2 05:00 3.0 12.2 9.3 06:00 3.0 10.5 7.5 07:00 3.3 11.5 8.1 08:00 3.2 11.7 8.3 09:00 3.2 10.7 7.4 10:00 3.2 12.6 9.2 11:00 3.3 12.3 8.7 12:00 3.9 12.6 8.4 13:00 4.9 14.6 9.2 14:00 5.6 14.9 8.8 15:00 6.3 15.0 8.2 16:00 6.8 15.8 8.4 17:00 6.5 P 15.3 P 8.3 P 18:00 6.7 15.8 8.7 19:00 6.4 15.2 8.5 20:00 6.7 15.6 8.6 21:00 5.7 13.1 7.0 22:00 5.6 12.2 6.4 23:00 5.7 13.5 7.5 Average 4.5 13.2 8.5 Max 6.8 15.8 10.8 Max Hour 16:00 18:00 03:00 Min 2.8 10.5 6.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.52% Date Printed: 6/1/2026 01:30 Daily Summary Report Site: Union Cross 5/31/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .040 737.7 66.9 45.8 01:00 .041 738.0 64.5 46.6 02:00 .043 738.3 62.0 47.8 03:00 .040 738.5 60.0 47.0 04:00 .037 738.9 58.4 46.6 05:00 .035 739.2 57.7 47.0 06:00 .034 739.6 59.0 48.1 07:00 .037 739.9 61.1 49.1 08:00 .039 739.9 63.6 49.7 09:00 .040 739.8 65.3 49.0 10:00 .042 739.5 67.2 49.5 11:00 .044 739.2 69.0 50.2 12:00 .045 738.7 71.3 52.8 13:00 .046 738.0 73.0 54.1 14:00 .049 737.4 73.7 55.2 15:00 .050 736.7 74.7 56.4 16:00 .052 736.5 74.1 56.6 17:00 .048 736.4 72.6 56.2 18:00 .044 736.3 72.2 56.9 19:00 .040 736.3 70.2 56.8 20:00 .037 736.4 68.5 56.7 21:00 .035 736.6 68.5 56.4 22:00 .033 C 736.6 68.4 56.3 23:00 C 736.3 68.3 56.6 Average .041 737.9 67.0 51.9 Max .052 739.9 74.7 56.9 Max Hour 16:00 08:00 15:00 18:00 Min .033 736.3 57.7 45.8 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 31-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 31-May-2026 22:50:00 23:50:00 0.07 0.07 .05% 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