Date Printed: 4/16/2026 01:30 Daily Summary Report Site: Clemmons Middle 4/15/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .035 9.4 18.2 8.7 01:00 .030 10.0 18.1 8.1 02:00 .030 10.4 17.3 6.8 03:00 .030 10.8 18.1 7.2 04:00 .022 11.2 18.7 7.4 05:00 .016 12.0 19.2 7.1 06:00 .013 B 13.0 33.3 20.2 07:00 .017 14.1 52.2 38.0 08:00 .039 13.4 30.3 16.9 09:00 .046 11.6 26.2 14.6 10:00 .053 9.2 23.0 13.8 11:00 .056 B B B 12:00 .058 7.6 17.6 9.9 13:00 .064 8.9 18.7 9.7 14:00 .072 9.2 19.5 10.1 15:00 .079 9.5 24.4 14.9 16:00 .085 9.8 27.6 17.8 17:00 .081 8.7 24.7 15.9 18:00 .072 8.1 20.1 11.9 19:00 .064 14.2 96.9 82.6 20:00 .056 9.3 28.4 19.1 21:00 .057 9.7 28.5 18.8 22:00 .054 C 8.4 18.0 9.6 23:00 C 7.9 17.6 9.6 Average .049 10.2 26.8 16.4 Max .085 14.2 96.9 82.6 Max Hour 16:00 19:00 19:00 19:00 Min .013 7.6 17.3 6.8 Count 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Apr-2026 22:50:00 23:50:00 0.07 0.07 -.01% Date Printed: 4/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 4/15/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .046 .1 3.7 3.8 .1 01:00 .045 .1 3.5 3.6 .2 02:00 .043 .1 3.9 4.1 .2 03:00 .042 .1 4.7 4.8 .1 04:00 .031 .2 6.2 6.4 .1 05:00 .021 .4 10.5 10.9 .0 06:00 .011 B B B .1 07:00 D B B B .3 08:00 D B B B .3 09:00 .046 B B B .2 10:00 .058 B B B .1 11:00 .063 B B B .2 12:00 .061 .1 1.8 2.0 .1 13:00 .063 .1 2.0 2.2 .1 14:00 .071 .1 2.4 2.6 .4 15:00 .073 .1 C 2.7 C 2.9 C .3 16:00 .078 C C C .1 17:00 .086 .1 C 3.9 C 4.0 C .1 18:00 .073 .0 5.5 5.6 .1 19:00 .063 .0 7.5 7.6 .1 C 20:00 .051 -.1 11.9 11.7 C 21:00 .049 .1 9.9 10.1 .1 C 22:00 .048 C .1 7.2 7.3 .1 23:00 C .1 7.3 7.4 .1 Average .053 .1 5.5 5.7 .1 Max .086 .4 11.9 11.7 .4 Max Hour 17:00 05:00 20:00 20:00 14:00 Min .011 -.1 1.8 2.0 .0 Count 21 17 17 17 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 15-Apr-2026 15:46:00 16:11:00 67.4 70 -3.65% GPT-PS 15-Apr-2026 15:46:00 16:18:00 0.5 0.0 .51 GPTZ 15-Apr-2026 15:46:00 16:38:00 216.6 225 -3.7% GPT-PREC 15-Apr-2026 15:46:00 17:08:00 152.1 155 -1.83% NO2 GPT-PREC 15-Apr-2026 15:46:00 17:08:00 65.6 70 -6.18% NO2 Precision NO2_Diff PRECDIFF 15-Apr-2026 17:15:00 17:15:05 64.5 65.674 -1.76% NOx NOx_Auto NO-PREC 15-Apr-2026 15:46:00 16:11:00 67.5 70 -3.54% Ozone O3_Auto ZERO 15-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Apr-2026 22:50:00 23:50:00 0.067 0.07 -3.83% SO2 SO2_Auto ZERO 15-Apr-2026 19:46:00 20:11:00 0 0.0 -.01 SPAN 15-Apr-2026 19:46:00 20:36:00 86 90 -4.43% PREC 15-Apr-2026 19:46:00 21:01:00 37.9 40 -5.08% Date Printed: 4/16/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 4/15/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 10.2 20.7 10.2 01:00 11.0 22.4 11.1 02:00 12.1 23.7 11.5 03:00 12.6 23.6 10.8 04:00 12.5 22.6 10.0 05:00 13.5 22.7 9.2 06:00 13.8 23.8 10.0 07:00 14.4 28.5 13.8 08:00 15.0 31.7 15.9 09:00 11.6 32.1 19.4 10:00 8.2 P 21.3 P 12.2 P 11:00 8.1 23.5 14.3 12:00 7.4 20.5 12.1 13:00 8.5 19.2 9.6 14:00 10.1 25.9 14.4 15:00 10.6 24.9 12.9 16:00 9.9 26.0 14.7 17:00 9.8 28.3 17.2 18:00 8.2 26.3 17.0 19:00 8.6 34.7 25.0 20:00 9.5 31.3 20.9 21:00 9.8 23.8 13.4 22:00 9.6 23.2 13.1 23:00 9.8 21.4 11.1 Average 10.6 25.0 13.7 Max 15.0 34.7 25.0 Max Hour 08:00 19:00 19:00 Min 7.4 19.2 9.2 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.08% Date Printed: 4/16/2026 01:30 Daily Summary Report Site: Union Cross 4/15/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .052 737.5 69.5 52.4 01:00 .046 737.1 67.9 51.9 02:00 .042 736.9 65.6 51.4 03:00 .039 737.0 64.3 51.2 04:00 .030 737.3 61.4 50.9 05:00 .030 737.8 60.7 50.7 06:00 .029 738.3 62.5 51.4 07:00 .032 738.8 65.4 53.6 08:00 .042 738.6 70.4 55.9 09:00 .050 738.6 76.1 56.8 10:00 .058 738.4 79.5 57.0 11:00 .063 738.0 81.8 57.3 12:00 .066 737.5 83.9 59.2 13:00 .069 737.3 85.2 60.0 14:00 .066 736.8 86.2 60.8 15:00 .070 736.6 86.7 60.8 16:00 .074 736.5 86.3 60.2 17:00 .079 736.3 85.4 58.1 18:00 .071 736.4 82.4 56.3 19:00 .064 736.6 78.8 53.7 20:00 .060 736.9 76.3 52.6 21:00 .054 737.2 73.5 52.2 22:00 .049 C 737.0 71.7 51.9 23:00 C 736.8 69.7 51.6 Average .053 737.3 74.6 54.9 Max .079 738.8 86.7 60.8 Max Hour 17:00 07:00 15:00 15:00 Min .029 736.3 60.7 50.7 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 15-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 15-Apr-2026 22:50:00 23:50:00 0.069 0.07 -.43% 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