Date Printed: 5/30/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/29/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .040 B 6.5 13.8 7.3 01:00 .032 B 6.5 14.5 8.0 02:00 .025 6.8 14.7 7.9 03:00 .028 7.1 14.2 7.0 04:00 .028 7.0 15.6 8.6 05:00 .013 7.3 23.4 16.0 06:00 .011 7.5 18.2 10.7 07:00 .029 7.1 15.7 8.6 08:00 .037 7.0 16.3 9.3 09:00 .046 5.9 13.6 7.7 10:00 .051 6.0 13.6 7.6 11:00 .054 5.8 13.2 7.4 12:00 .055 5.9 18.2 12.3 13:00 .055 6.4 14.7 8.3 14:00 .054 6.4 13.5 7.0 15:00 .054 7.0 14.8 7.8 16:00 .054 7.1 15.0 7.8 17:00 .054 7.6 15.9 8.2 18:00 .050 B 9.4 18.5 9.1 19:00 .050 9.9 25.2 15.1 20:00 .043 10.6 33.7 23.1 21:00 .037 10.4 23.8 13.4 22:00 .032 C 10.1 19.6 9.4 23:00 C 9.8 17.4 7.6 Average .040 7.5 17.3 9.8 Max .055 10.6 33.7 23.1 Max Hour 13:00 20:00 20:00 20:00 Min .011 5.8 13.2 7.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 29-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 29-May-2026 22:50:00 23:50:00 0.068 0.07 -1.96% Date Printed: 5/30/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/29/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .039 .1 2.6 2.7 -.4 01:00 .035 .1 4.2 4.3 -.2 02:00 .033 .1 3.0 3.2 -.3 03:00 .032 .2 2.9 3.2 -.3 04:00 .030 .3 3.3 3.7 -.1 05:00 .027 .2 4.0 4.2 -.2 06:00 .026 .8 4.2 5.1 -.1 07:00 .032 .9 3.5 4.4 .1 08:00 .040 .4 2.1 2.6 -.4 09:00 .046 .2 1.8 2.1 -.4 10:00 .051 .2 1.9 2.2 -.3 11:00 .056 .2 2.0 2.3 -.3 12:00 .063 .2 2.8 3.0 -.2 13:00 .060 .2 2.5 2.7 -.1 14:00 .058 .2 2.1 2.3 -.3 15:00 .059 .1 C 2.1 C 2.3 C -.3 16:00 .058 C C C -.3 17:00 .056 .1 C 2.4 C 2.5 C -.3 18:00 .055 .1 3.0 3.1 -.3 19:00 .051 .0 4.4 4.5 -.3 C 20:00 .049 .0 5.8 5.8 C 21:00 .045 .1 7.1 7.3 -.3 C 22:00 .042 C .1 6.5 6.7 -.3 23:00 C .1 4.9 5.1 -.4 Average .045 .2 3.4 3.7 -.2 Max .063 .9 7.1 7.3 .1 Max Hour 12:00 07:00 21:00 21:00 07:00 Min .026 .0 1.8 2.1 -.4 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 29-May-2026 15:46:00 16:11:00 66.5 70 -4.89% GPT-PS 29-May-2026 15:46:00 16:18:00 0.4 0.0 .47 GPTZ 29-May-2026 15:46:00 16:38:00 215.4 225 -4.23% GPT-PREC 29-May-2026 15:46:00 17:08:00 150.7 155 -2.76% NO2 GPT-PREC 29-May-2026 15:46:00 17:08:00 65.2 70 -6.72% NO2 Precision NO2_Diff PRECDIFF 29-May-2026 17:15:00 17:15:05 64.7 65.299 -.83% NOx NOx_Auto NO-PREC 29-May-2026 15:46:00 16:11:00 66.6 70 -4.78% Ozone O3_Auto ZERO 29-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 29-May-2026 22:50:00 23:50:00 0.068 0.07 -2.81% SO2 SO2_Auto ZERO 29-May-2026 19:46:00 20:11:00 -0.6 0.0 -.6 SPAN 29-May-2026 19:46:00 20:36:00 88.2 90 -1.98% PREC 29-May-2026 19:46:00 21:01:00 38.8 40 -2.79% Date Printed: 5/30/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/29/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.3 14.8 7.2 01:00 6.8 15.1 8.0 02:00 7.0 14.5 7.3 03:00 7.1 14.9 7.7 04:00 7.1 14.5 7.3 05:00 7.2 14.3 7.0 06:00 7.2 15.1 7.7 07:00 8.0 16.2 8.0 08:00 7.0 16.4 9.1 09:00 5.8 13.6 7.5 10:00 6.0 13.8 7.4 11:00 6.1 15.6 8.9 12:00 6.7 16.3 9.0 13:00 6.4 15.1 8.0 14:00 6.8 16.3 8.7 15:00 7.0 15.4 7.6 16:00 7.4 18.2 9.9 17:00 7.5 16.8 8.6 18:00 8.2 16.8 7.9 19:00 9.4 19.7 9.6 20:00 10.6 20.4 9.1 21:00 11.4 22.1 10.1 22:00 12.4 21.4 8.4 23:00 12.4 22.2 9.2 Average 7.8 16.6 8.3 Max 12.4 22.2 10.1 Max Hour 23:00 23:00 21:00 Min 5.8 13.6 7.0 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.79% Date Printed: 5/30/2026 01:30 Daily Summary Report Site: Union Cross 5/29/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .039 736.7 70.1 54.6 01:00 .037 736.8 67.8 54.4 02:00 .033 736.9 65.9 54.1 03:00 .029 736.9 64.6 54.0 04:00 .026 737.2 63.8 53.6 05:00 .015 737.7 61.7 53.7 06:00 .019 738.2 63.8 54.5 07:00 .031 738.4 67.0 53.2 08:00 .039 738.3 68.8 53.1 09:00 .046 738.2 71.2 53.6 10:00 .052 738.1 73.7 54.9 11:00 .057 737.9 75.4 55.5 12:00 .056 737.5 77.5 56.5 13:00 .058 736.8 78.8 58.2 14:00 .059 736.1 80.2 59.4 15:00 .061 735.2 81.0 60.4 16:00 .062 734.8 81.4 60.6 17:00 .059 734.6 80.9 60.8 18:00 .056 734.5 78.7 60.8 19:00 .046 734.5 75.9 61.2 20:00 .042 734.6 74.0 61.2 21:00 .036 734.8 73.2 61.4 22:00 .032 C 734.7 72.4 61.5 23:00 C 734.4 71.5 61.8 Average .043 736.4 72.4 57.2 Max .062 738.4 81.4 61.8 Max Hour 16:00 07:00 16:00 23:00 Min .015 734.4 61.7 53.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 29-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 29-May-2026 22:50:00 23:50:00 0.069 0.07 -.57% 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