Date Printed: 5/17/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/16/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .032 5.7 13.0 7.2 01:00 .024 6.2 12.5 6.2 02:00 .020 B 10.3 18.1 7.7 03:00 .019 9.3 16.6 7.3 04:00 .017 7.6 13.8 6.1 05:00 .012 7.8 14.3 6.5 06:00 .012 8.1 14.2 6.0 07:00 .027 8.4 24.1 15.7 08:00 .039 6.2 13.6 7.4 09:00 .048 6.1 15.9 9.7 10:00 .056 6.2 17.0 10.7 11:00 .063 6.8 16.2 9.4 12:00 .066 7.6 17.0 9.3 13:00 .067 7.3 18.1 10.8 14:00 .068 7.0 17.1 10.1 15:00 .069 7.2 18.1 10.7 16:00 .071 7.5 20.1 12.5 17:00 .070 7.7 19.2 11.4 18:00 .067 B 8.0 16.4 8.4 19:00 .064 8.4 17.2 8.8 20:00 .059 9.1 26.8 17.7 21:00 .056 9.1 19.4 10.2 22:00 .049 C 8.2 16.7 8.5 23:00 C 8.6 17.3 8.6 Average .046 7.6 17.1 9.4 Max .071 10.3 26.8 17.7 Max Hour 16:00 02:00 20:00 20:00 Min .012 5.7 12.5 6.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-May-2026 22:50:00 23:20:00 0.001 0.0 0.00 PREC 16-May-2026 22:50:00 23:50:00 0.071 0.07 2.23% Date Printed: 5/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/16/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .021 .4 14.6 15.0 -.2 01:00 .030 .2 13.1 13.4 .0 02:00 .033 .2 10.6 10.8 .4 03:00 .029 .2 8.4 8.7 .4 04:00 .022 .2 8.5 8.8 .3 05:00 .020 .6 10.3 10.9 .5 06:00 .020 2.3 10.0 12.4 1.2 07:00 .032 1.8 7.8 9.6 .8 08:00 .038 1.5 7.4 9.0 .8 09:00 .046 1.1 5.3 6.5 .6 10:00 .055 .2 2.6 2.9 -.1 11:00 .059 .2 2.6 2.9 -.2 12:00 .062 .2 2.5 2.7 -.2 13:00 .065 .1 2.4 2.6 -.2 14:00 .067 .2 2.9 3.1 -.2 15:00 .067 .1 C 3.3 C 3.5 C -.2 16:00 .067 C C C -.2 17:00 .067 .1 C 3.1 C 3.3 C -.2 18:00 .065 .1 3.7 3.8 -.2 19:00 .060 .0 6.0 6.1 -.2 C 20:00 .054 .1 6.9 7.0 C 21:00 .053 .1 5.7 5.8 -.1 C 22:00 .051 C .1 4.2 4.4 -.1 23:00 C .1 4.5 4.6 -.1 Average .047 .4 6.3 6.8 .1 Max .067 2.3 14.6 15.0 1.2 Max Hour 17:00 06:00 00:00 00:00 06:00 Min .020 .0 2.4 2.6 -.2 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 16-May-2026 15:46:00 16:11:00 66.7 70 -4.69% GPT-PS 16-May-2026 15:46:00 16:18:00 0.5 0.0 .5 GPTZ 16-May-2026 15:46:00 16:38:00 214.9 225 -4.47% GPT-PREC 16-May-2026 15:46:00 17:08:00 148.9 155 -3.88% NO2 GPT-PREC 16-May-2026 15:46:00 17:08:00 66.9 70 -4.38% NO2 Precision NO2_Diff PRECDIFF 16-May-2026 17:15:00 17:15:05 65.9 66.934 -1.47% NOx NOx_Auto NO-PREC 16-May-2026 15:46:00 16:11:00 67.1 70 -4.01% Ozone O3_Auto ZERO 16-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-May-2026 22:50:00 23:50:00 0.067 0.07 -3.55% SO2 SO2_Auto ZERO 16-May-2026 19:46:00 20:11:00 -0.5 0.0 -.52 SPAN 16-May-2026 19:46:00 20:36:00 88.8 90 -1.24% PREC 16-May-2026 19:46:00 21:01:00 39 40 -2.34% Date Printed: 5/17/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/16/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 10.0 19.6 9.8 01:00 8.9 18.9 10.1 02:00 8.6 18.4 9.9 03:00 7.6 15.9 8.5 04:00 7.8 15.0 7.4 05:00 8.4 18.4 10.3 06:00 8.2 17.3 9.2 07:00 7.5 17.4 9.7 08:00 6.4 14.7 8.0 09:00 6.2 14.7 8.1 10:00 6.2 17.3 10.6 11:00 7.1 18.3 10.5 12:00 7.5 18.0 9.8 13:00 7.6 19.2 10.7 14:00 6.9 16.6 8.9 15:00 6.6 16.4 9.0 16:00 6.9 17.5 9.8 17:00 7.4 17.5 9.3 18:00 8.0 19.2 10.6 19:00 9.0 20.6 11.0 20:00 9.5 21.6 11.5 21:00 10.0 21.1 10.6 22:00 9.5 18.6 8.7 23:00 10.0 19.2 8.8 Average 7.9 17.9 9.6 Max 10.0 21.6 11.5 Max Hour 23:00 20:00 20:00 Min 6.2 14.7 7.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.34% Date Printed: 5/17/2026 01:30 Daily Summary Report Site: Union Cross 5/16/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .047 738.8 59.6 41.6 01:00 .045 738.5 59.4 41.6 02:00 .042 738.3 58.3 41.7 03:00 .039 738.5 56.8 41.6 04:00 .033 738.9 54.9 41.5 05:00 .032 739.2 54.1 42.1 06:00 .026 739.9 57.3 44.5 07:00 .034 740.3 61.5 46.8 08:00 .038 740.3 66.1 49.3 09:00 .050 740.0 70.6 50.8 10:00 .057 739.9 74.1 52.1 11:00 .061 739.8 76.8 54.3 12:00 .063 739.2 79.0 55.7 13:00 .064 738.9 81.0 56.7 14:00 .066 738.8 82.4 57.6 15:00 .065 738.3 82.6 57.8 16:00 .065 738.1 82.4 57.6 17:00 .066 738.1 81.3 56.8 18:00 .064 737.9 80.0 56.7 19:00 .062 737.9 76.4 54.5 20:00 .061 738.1 73.7 52.8 21:00 .056 738.5 72.0 52.5 22:00 .049 C 738.5 70.7 52.9 23:00 C 738.6 69.4 53.1 Average .051 738.8 70.0 50.5 Max .066 740.3 82.6 57.8 Max Hour 17:00 08:00 15:00 15:00 Min .026 737.9 54.1 41.5 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 16-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 16-May-2026 22:50:00 23:50:00 0.07 0.07 1.04% 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