Date Printed: 4/2/2026 01:30 Daily Summary Report Site: Clemmons Middle 4/1/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .035 7.6 19.8 12.2 01:00 .032 8.6 19.5 10.8 02:00 .031 11.8 22.1 10.2 03:00 .030 15.7 26.7 10.9 04:00 .029 17.9 28.7 10.7 05:00 .026 18.3 29.1 10.8 06:00 .023 18.0 31.7 13.7 07:00 .023 17.5 32.6 15.0 08:00 .028 16.4 B 31.2 B 14.8 B 09:00 .033 B B B 10:00 .040 B B B 11:00 .046 14.2 28.2 13.9 12:00 .049 B 11.6 21.6 9.9 13:00 .049 9.2 19.6 10.3 14:00 .046 6.9 17.5 10.5 15:00 .048 7.2 16.8 9.5 16:00 .051 7.7 22.8 15.1 17:00 .049 B 7.4 17.2 9.7 18:00 .046 6.5 17.3 10.8 19:00 .042 6.1 17.4 11.2 20:00 .040 6.9 17.0 10.1 21:00 .034 6.5 17.4 10.9 22:00 .029 C 7.2 16.3 9.0 23:00 C 7.7 18.2 10.4 Average .037 10.7 22.2 11.3 Max .051 18.3 32.6 15.1 Max Hour 16:00 05:00 07:00 16:00 Min .023 6.1 16.3 9.0 Count 23 22 22 22 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Apr-2026 22:50:00 23:50:00 0.069 0.07 -.55% Date Printed: 4/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 4/1/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .1 3.5 3.6 .1 01:00 .030 .1 3.3 3.4 .0 02:00 .029 .1 4.2 4.4 .0 03:00 .024 .1 7.8 8.0 .1 04:00 .025 .1 5.2 5.4 .0 05:00 .022 .2 5.2 5.4 .0 06:00 .018 .6 B 7.5 B 8.1 B .0 07:00 .020 B B B .0 08:00 .024 B B B .1 09:00 .029 B B B .1 10:00 .036 B B B .2 11:00 .042 .5 2.5 3.0 .1 12:00 .045 .2 2.0 2.2 .1 13:00 .046 .2 1.7 1.9 .1 14:00 .043 .2 1.7 1.9 .1 15:00 .045 .2 C 2.1 C 2.3 C .0 16:00 .050 C C C .1 17:00 .048 .0 C 4.6 C 4.7 C .1 18:00 .042 .0 5.5 5.6 .1 19:00 .037 .0 7.2 7.3 .1 C 20:00 .032 .1 8.1 8.3 C 21:00 .034 .1 5.5 5.6 .1 C 22:00 .028 C .1 8.2 8.3 .1 23:00 C .1 7.3 7.5 .3 Average .033 .1 4.9 5.1 .0 Max .050 .6 8.2 8.3 .3 Max Hour 16:00 06:00 22:00 22:00 23:00 Min .018 .0 1.7 1.9 .0 Count 23 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 01-Apr-2026 15:46:00 16:11:00 67.4 70 -3.7% GPT-PS 01-Apr-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 01-Apr-2026 15:46:00 16:38:00 217.1 225 -3.49% GPT-PREC 01-Apr-2026 15:46:00 17:08:00 150.5 155 -2.87% NO2 GPT-PREC 01-Apr-2026 15:46:00 17:08:00 67.4 70 -3.7% NO2 Precision NO2_Diff PRECDIFF 01-Apr-2026 17:15:00 17:15:05 66.5 67.408 -1.2% NOx NOx_Auto NO-PREC 01-Apr-2026 15:46:00 16:11:00 67.6 70 -3.41% Ozone O3_Auto ZERO 01-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Apr-2026 22:50:00 23:50:00 0.065 0.07 -6.57% SO2 SO2_Auto ZERO 01-Apr-2026 19:46:00 20:11:00 0 0.0 -.09 SPAN 01-Apr-2026 19:46:00 20:36:00 86.1 90 -4.25% PREC 01-Apr-2026 19:46:00 21:01:00 38.1 40 -4.62% Date Printed: 4/2/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 4/1/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.8 18.4 10.6 01:00 11.3 21.9 10.5 02:00 17.1 27.7 10.5 03:00 20.6 32.1 11.5 04:00 20.2 31.0 10.8 05:00 19.9 31.6 11.8 06:00 19.1 29.6 10.5 07:00 18.4 30.6 12.2 08:00 17.7 30.3 12.5 09:00 17.5 30.9 12.9 10:00 17.1 32.5 14.7 11:00 15.5 28.8 12.3 12:00 13.1 25.0 10.9 13:00 10.2 19.5 8.5 14:00 8.2 17.0 7.9 15:00 8.1 18.2 9.4 16:00 8.7 21.4 11.8 17:00 8.0 20.9 12.1 18:00 7.7 19.4 11.1 19:00 8.0 20.2 11.6 20:00 8.7 22.3 13.0 21:00 7.7 18.1 10.0 22:00 11.6 21.3 9.4 23:00 10.4 21.4 10.6 Average 13.0 24.5 11.1 Max 20.6 32.5 14.7 Max Hour 03:00 10:00 10:00 Min 7.7 17.0 7.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.62% Date Printed: 4/2/2026 01:30 Daily Summary Report Site: Union Cross 4/1/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .035 739.7 64.1 55.7 01:00 .034 739.6 63.2 55.7 02:00 .031 739.7 61.8 55.9 03:00 .030 739.5 60.7 56.4 04:00 .030 739.6 60.3 57.0 05:00 .029 739.9 60.3 57.6 06:00 .024 740.4 59.8 57.8 07:00 .023 B 740.9 61.1 58.2 08:00 .028 741.1 63.5 58.9 09:00 .033 741.3 67.4 59.5 10:00 .039 741.1 72.6 60.7 11:00 .046 740.6 76.7 61.4 12:00 .048 740.3 80.0 61.3 13:00 .048 739.5 81.7 61.7 14:00 .050 738.6 82.6 61.8 15:00 .054 738.2 82.6 61.8 16:00 .055 738.0 82.0 60.8 17:00 .054 738.1 81.3 60.3 18:00 .047 738.4 79.0 59.6 19:00 .042 739.0 76.6 58.8 20:00 .039 739.4 75.3 58.8 21:00 .036 739.7 73.9 58.6 22:00 .035 C 739.8 72.0 58.3 23:00 C 740.0 70.2 57.9 Average .038 739.6 71.1 58.9 Max .055 741.3 82.6 61.8 Max Hour 16:00 09:00 15:00 15:00 Min .023 738.0 59.8 55.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 01-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 01-Apr-2026 22:50:00 23:50:00 0.07 0.07 .21% 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