Date Printed: 4/14/2026 01:30 Daily Summary Report Site: Clemmons Middle 4/13/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .051 10.0 21.4 11.3 01:00 .050 8.6 16.6 7.9 02:00 .047 8.6 16.8 8.2 03:00 .044 9.5 17.2 7.7 04:00 .043 B 9.8 17.1 7.2 05:00 .041 9.0 18.1 9.1 06:00 .036 9.4 45.9 36.5 07:00 .037 6.8 23.3 16.5 08:00 .041 6.4 17.2 10.7 09:00 .044 6.6 15.9 9.2 10:00 .048 B 7.2 18.8 11.5 11:00 .051 6.9 19.6 12.6 12:00 .053 6.8 18.6 11.8 13:00 .055 6.2 18.6 12.3 14:00 .055 6.1 16.9 10.7 15:00 .055 7.1 29.7 22.5 16:00 .055 6.5 16.8 10.3 17:00 .054 6.6 18.5 11.8 18:00 .050 6.6 17.6 10.9 19:00 .047 8.4 42.6 34.2 20:00 .046 7.0 22.0 15.1 21:00 .044 B 6.0 13.3 7.2 22:00 .041 C 6.0 12.7 6.6 23:00 C 6.1 12.9 6.8 Average .047 7.4 20.3 12.8 Max .055 10.0 45.9 36.5 Max Hour 16:00 00:00 06:00 06:00 Min .036 6.0 12.7 6.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Apr-2026 22:50:00 23:50:00 0.07 0.069 .88% Date Printed: 4/14/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 4/13/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .050 .0 2.2 2.3 .4 01:00 .048 .0 2.1 2.1 .6 02:00 .046 .1 2.4 2.5 .6 03:00 .044 .1 2.8 2.9 .5 04:00 .042 .1 3.2 3.3 .3 05:00 .039 .1 4.5 4.7 .1 06:00 .038 .2 4.8 5.0 .1 07:00 .037 .5 4.6 5.2 .1 08:00 .039 .4 2.8 3.3 .1 09:00 .043 .4 2.3 2.8 .1 10:00 .047 .3 2.1 2.4 .1 11:00 .050 .2 1.8 2.0 .1 12:00 .053 .2 1.8 2.0 .1 13:00 .054 .2 2.0 2.2 .1 14:00 .055 .1 2.1 2.3 .1 15:00 .055 .1 C 1.9 C 2.0 C .1 16:00 .053 C C C .1 17:00 .053 .1 C 2.6 C 2.8 C .1 18:00 .051 .0 3.1 3.1 .0 19:00 .044 .0 6.0 6.1 .0 C 20:00 .043 .0 5.4 5.5 C 21:00 .044 .0 3.0 3.1 .1 C 22:00 .042 C .0 3.0 3.1 .1 23:00 C .0 2.6 2.7 .0 Average .046 .1 3.0 3.1 .1 Max .055 .5 6.0 6.1 .6 Max Hour 15:00 07:00 19:00 19:00 02:00 Min .037 .0 1.8 2.0 .0 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 13-Apr-2026 15:46:00 16:11:00 66.9 70 -4.34% GPT-PS 13-Apr-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 13-Apr-2026 15:46:00 16:38:00 216.3 225 -3.82% GPT-PREC 13-Apr-2026 15:46:00 17:08:00 151 155 -2.53% NO2 GPT-PREC 13-Apr-2026 15:46:00 17:08:00 65.6 70 -6.28% NO2 Precision NO2_Diff PRECDIFF 13-Apr-2026 17:15:00 17:15:05 65.3 65.601 -.43% NOx NOx_Auto NO-PREC 13-Apr-2026 15:46:00 16:11:00 67 70 -4.24% Ozone O3_Auto ZERO 13-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Apr-2026 22:50:00 23:50:00 0.067 0.07 -3.23% SO2 SO2_Auto ZERO 13-Apr-2026 19:46:00 20:11:00 0 0.0 -.05 SPAN 13-Apr-2026 19:46:00 20:36:00 85.5 90 -4.98% PREC 13-Apr-2026 19:46:00 21:01:00 37.9 40 -5.22% Date Printed: 4/14/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 4/13/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 10.8 22.8 11.9 01:00 9.3 19.8 10.4 02:00 9.7 21.7 11.9 03:00 10.5 18.9 8.4 04:00 11.2 17.9 6.8 05:00 10.1 17.2 7.2 06:00 8.1 14.8 6.8 07:00 6.8 14.4 7.6 08:00 6.6 13.5 6.8 09:00 7.0 16.8 9.6 10:00 7.3 18.5 10.8 11:00 7.2 19.7 11.9 12:00 7.1 18.2 10.4 13:00 6.6 17.1 9.9 14:00 6.3 17.7 10.8 15:00 6.6 18.4 11.1 16:00 6.7 18.2 10.9 17:00 6.9 19.3 11.8 18:00 6.9 18.1 10.7 19:00 7.5 18.2 10.4 20:00 7.6 20.2 12.3 21:00 6.5 14.0 7.3 22:00 6.6 15.3 8.5 23:00 6.2 14.0 7.6 Average 7.7 17.6 9.6 Max 11.2 22.8 12.3 Max Hour 04:00 00:00 20:00 Min 6.2 13.5 6.8 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.22% Date Printed: 4/14/2026 01:30 Daily Summary Report Site: Union Cross 4/13/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .051 742.8 67.8 53.9 01:00 .049 742.7 66.4 53.3 02:00 .048 742.6 64.7 52.5 03:00 .046 742.7 63.2 52.1 04:00 .043 742.9 61.6 51.3 05:00 .043 743.3 60.9 51.0 06:00 .040 743.6 60.4 51.7 07:00 .039 743.9 61.7 53.0 08:00 .043 744.0 64.8 53.7 09:00 .045 743.8 67.9 54.7 10:00 .048 743.4 71.4 55.7 11:00 .051 742.9 74.4 57.0 12:00 .053 742.3 77.2 57.1 13:00 .054 741.8 78.7 57.1 14:00 .055 741.3 79.2 56.6 15:00 .056 740.9 79.3 56.1 16:00 .056 740.7 79.4 56.3 17:00 .054 740.5 78.1 56.3 18:00 .051 740.5 75.1 55.1 19:00 .048 740.6 72.6 54.4 20:00 .044 740.7 70.3 53.9 21:00 .044 740.7 69.4 53.4 22:00 .041 C 740.6 68.0 53.0 23:00 C 740.4 67.3 52.9 Average .047 742.0 69.9 54.2 Max .056 744.0 79.4 57.1 Max Hour 16:00 08:00 16:00 13:00 Min .039 740.4 60.4 51.0 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 13-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 13-Apr-2026 22:50:00 23:50:00 0.069 0.07 -.28% 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