Date Printed: 7/5/2026 01:30 Daily Summary Report Site: Clemmons Middle 7/4/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .020 15.1 26.3 11.1 01:00 .020 15.8 27.5 11.6 02:00 .019 16.4 27.9 11.4 03:00 .015 16.2 26.5 10.3 04:00 .012 16.3 26.1 9.7 05:00 .010 16.1 25.5 9.4 06:00 .016 15.4 24.2 8.8 07:00 .030 15.5 26.2 10.6 08:00 .042 15.5 27.4 11.9 09:00 .048 B 15.6 27.6 12.0 10:00 .056 15.5 27.9 12.4 11:00 .056 16.1 27.0 10.9 12:00 .055 16.0 27.7 11.7 13:00 .061 16.1 27.5 11.3 14:00 .061 16.4 26.3 9.9 15:00 .059 16.0 27.1 11.1 16:00 .056 14.8 25.1 10.2 17:00 .051 13.1 22.6 9.4 18:00 .051 12.9 23.1 10.1 19:00 .048 12.7 20.8 8.1 20:00 .044 15.2 24.4 9.2 21:00 .034 62.8 84.8 21.9 22:00 .031 C 37.9 52.4 14.5 23:00 C 37.4 50.9 13.5 Average .038 19.2 30.5 11.2 Max .061 62.8 84.8 21.9 Max Hour 14:00 21:00 21:00 21:00 Min .010 12.7 20.8 8.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-Jul-2026 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 04-Jul-2026 22:50:00 23:50:00 0.066 0.07 -4.6% Date Printed: 7/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 7/4/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .032 .2 9.5 9.7 .6 01:00 .033 .2 7.4 7.7 1.1 02:00 .032 .3 7.6 7.9 .9 03:00 .032 .2 6.3 6.6 .7 04:00 .028 .3 7.2 7.5 .5 05:00 .025 .5 7.5 8.0 .4 06:00 .028 .8 7.0 7.8 .4 07:00 .039 .6 5.3 6.0 .3 08:00 .046 .4 3.6 4.0 .3 09:00 .051 .3 2.6 3.0 .3 10:00 .059 .2 2.2 2.5 .3 11:00 .062 .1 2.1 2.2 .2 12:00 .060 .1 2.1 2.3 .2 13:00 .062 .1 2.2 2.3 .2 14:00 .066 .1 2.3 2.4 .2 15:00 .062 .1 C 2.3 C 2.4 C .3 16:00 .059 C C C .3 17:00 .057 .1 C 3.1 C 3.3 C .3 18:00 .054 .1 3.7 3.9 .3 19:00 .052 .1 6.0 6.1 .2 C 20:00 .040 .2 11.6 11.9 C 21:00 .037 .2 11.6 11.8 1.5 C 22:00 .034 C .3 9.3 9.6 1.3 23:00 C .3 8.2 8.5 .7 Average .045 .2 5.6 5.9 .5 Max .066 .8 11.6 11.9 1.5 Max Hour 14:00 06:00 21:00 20:00 21:00 Min .025 .1 2.1 2.2 .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 04-Jul-2026 15:46:00 16:11:00 66.3 70 -5.17% GPT-PS 04-Jul-2026 15:46:00 16:18:00 0.5 0.0 .58 GPTZ 04-Jul-2026 15:46:00 16:38:00 214.4 225 -4.68% GPT-PREC 04-Jul-2026 15:46:00 17:08:00 148.6 155 -4.12% NO2 GPT-PREC 04-Jul-2026 15:46:00 17:08:00 67.1 70 -4.01% NO2 Precision NO2_Diff PRECDIFF 04-Jul-2026 17:15:00 17:15:05 65.8 67.194 -1.99% NOx NOx_Auto NO-PREC 04-Jul-2026 15:46:00 16:11:00 67.1 70 -4.1% Ozone O3_Auto ZERO 04-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-Jul-2026 22:50:00 23:50:00 0.068 0.07 -2.85% SO2 SO2_Auto ZERO 04-Jul-2026 19:46:00 20:11:00 0 0.0 0.00 SPAN 04-Jul-2026 19:46:00 20:36:00 90.9 90 1.04% PREC 04-Jul-2026 19:46:00 21:01:00 40.2 40 .6% Date Printed: 7/5/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 7/4/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 20.4 36.1 14.1 01:00 21.1 36.9 14.3 02:00 20.3 35.1 13.4 03:00 19.9 35.1 13.9 04:00 20.4 34.3 12.6 05:00 20.3 33.0 11.5 06:00 20.4 34.2 12.4 07:00 19.8 33.5 11.9 08:00 19.3 34.9 13.5 09:00 18.0 34.0 13.7 10:00 17.8 32.0 11.9 11:00 18.4 34.0 13.3 12:00 17.8 33.0 12.9 13:00 17.3 31.4 11.9 14:00 17.5 32.2 12.4 15:00 17.5 32.2 12.4 16:00 15.4 28.2 10.7 17:00 14.4 28.1 11.7 18:00 15.1 34.2 16.9 19:00 16.7 31.3 13.0 20:00 46.0 74.6 25.0 21:00 61.1 94.8 29.5 22:00 52.2 79.3 23.9 23:00 48.0 70.8 20.2 Average 23.9 40.9 14.8 Max 61.1 94.8 29.5 Max Hour 21:00 21:00 21:00 Min 14.4 28.1 10.7 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 .6% Date Printed: 7/5/2026 01:30 Daily Summary Report Site: Union Cross 7/4/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .039 737.2 83.6 69.8 01:00 .034 736.8 81.8 69.6 02:00 .029 736.5 80.5 69.9 03:00 .026 736.5 79.7 70.1 04:00 .025 736.5 78.6 70.2 05:00 .025 736.8 77.8 70.0 06:00 .026 737.1 79.6 70.7 07:00 .038 737.3 82.7 72.1 08:00 .053 737.3 86.8 73.4 09:00 .063 737.0 91.5 74.7 10:00 .064 736.9 94.4 74.8 11:00 .060 736.6 95.4 74.5 12:00 .059 736.2 96.7 74.9 13:00 .064 735.6 96.7 75.1 14:00 .062 735.3 96.7 74.9 15:00 .059 734.7 98.6 75.6 16:00 .057 734.6 98.6 74.7 17:00 .057 734.4 96.4 73.3 18:00 .054 734.2 94.2 72.6 19:00 .054 734.4 90.3 70.6 20:00 .045 734.8 86.6 69.3 21:00 .035 735.3 84.6 69.4 22:00 .036 C 735.6 82.5 69.6 23:00 C 735.5 80.2 69.4 Average .046 735.9 88.1 72.0 Max .064 737.3 98.6 75.6 Max Hour 13:00 08:00 16:00 15:00 Min .025 734.2 77.8 69.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 04-Jul-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 04-Jul-2026 22:50:00 23:50:00 0.069 0.07 -.55% 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