Date Printed: 4/13/2026 01:30 Daily Summary Report Site: Clemmons Middle 4/12/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .013 12.9 20.0 7.0 01:00 .032 10.9 19.1 8.2 02:00 .045 6.7 14.0 7.2 03:00 .042 7.7 13.9 6.2 04:00 .037 8.7 14.7 6.0 05:00 .034 10.3 17.2 6.8 06:00 .035 10.5 16.7 6.2 07:00 .040 10.2 17.2 7.0 08:00 .044 11.0 18.5 7.5 09:00 .045 12.0 19.9 7.8 10:00 .049 13.9 22.4 8.5 11:00 .054 14.6 22.8 8.2 12:00 .058 B 15.5 24.7 9.2 13:00 .059 14.1 23.6 9.4 14:00 .061 13.4 22.8 9.4 15:00 .061 13.0 23.8 10.7 16:00 .060 13.4 23.3 9.9 17:00 .062 14.5 23.4 8.9 18:00 .061 14.8 22.7 7.9 19:00 .054 15.7 30.4 14.7 20:00 .052 14.6 25.3 10.7 21:00 .050 13.8 24.1 10.2 22:00 .052 C 11.7 21.9 10.2 23:00 C 11.6 21.9 10.2 Average .047 12.3 21.0 8.6 Max .062 15.7 30.4 14.7 Max Hour 17:00 19:00 19:00 19:00 Min .013 6.7 13.9 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 12-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Apr-2026 22:50:00 23:50:00 0.069 0.07 .22% Date Printed: 4/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 4/12/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .048 .0 3.2 3.3 .0 01:00 .048 .1 1.9 2.0 .0 02:00 .044 .0 1.7 1.7 .0 03:00 .040 .0 2.7 2.8 .0 04:00 .035 .1 5.0 5.1 .1 05:00 .035 .1 3.6 3.7 .0 06:00 .036 .2 2.5 2.7 .0 07:00 .040 .2 1.9 2.2 .0 08:00 .043 .3 1.9 2.3 .0 09:00 .044 .3 1.8 2.2 .0 10:00 .047 .3 1.9 2.2 .0 11:00 .051 .2 1.9 2.1 .0 12:00 .057 .5 2.5 3.0 .0 13:00 .059 .1 2.1 2.3 .1 14:00 .061 .2 2.2 2.4 .1 15:00 .061 .1 C 2.3 C 2.5 C .2 16:00 .061 C C C .3 17:00 .061 .0 C 2.7 C 2.8 C .3 18:00 .059 .1 4.5 4.6 .2 19:00 .054 .0 6.6 6.7 .4 C 20:00 .046 .1 9.9 10.0 C 21:00 .049 .0 5.8 5.9 .7 C 22:00 .050 C .0 5.9 6.0 .7 23:00 C .0 5.5 5.6 .8 Average .049 .1 3.4 3.6 .1 Max .061 .5 9.9 10.0 .8 Max Hour 17:00 12:00 20:00 20:00 23:00 Min .035 .0 1.7 1.7 .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 12-Apr-2026 15:46:00 16:11:00 66.8 70 -4.53% GPT-PS 12-Apr-2026 15:46:00 16:18:00 0.5 0.0 .56 GPTZ 12-Apr-2026 15:46:00 16:38:00 215.8 225 -4.08% GPT-PREC 12-Apr-2026 15:46:00 17:08:00 150.6 155 -2.81% NO2 GPT-PREC 12-Apr-2026 15:46:00 17:08:00 65.8 70 -5.98% NO2 Precision NO2_Diff PRECDIFF 12-Apr-2026 17:15:00 17:15:05 65.1 65.813 -.97% NOx NOx_Auto NO-PREC 12-Apr-2026 15:46:00 16:11:00 67.1 70 -4.12% Ozone O3_Auto ZERO 12-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Apr-2026 22:50:00 23:50:00 0.066 0.07 -4.04% SO2 SO2_Auto ZERO 12-Apr-2026 19:46:00 20:11:00 0 0.0 -.09 SPAN 12-Apr-2026 19:46:00 20:36:00 85.4 90 -5.03% PREC 12-Apr-2026 19:46:00 21:01:00 37.8 40 -5.39% Date Printed: 4/13/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 4/12/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.8 14.7 6.8 01:00 6.7 12.1 5.4 02:00 7.4 14.6 7.3 03:00 8.1 14.9 7.0 04:00 9.0 15.8 6.9 05:00 10.8 18.1 7.6 06:00 11.1 17.8 6.9 07:00 10.6 17.1 6.6 08:00 11.3 18.2 7.1 09:00 13.5 21.2 7.7 10:00 14.9 24.6 9.6 11:00 15.5 24.6 8.8 12:00 16.1 26.0 9.5 13:00 14.9 24.6 9.1 14:00 14.3 23.2 8.3 15:00 12.3 22.3 9.2 16:00 12.5 22.4 9.1 17:00 14.2 24.8 9.9 18:00 15.2 26.0 10.2 19:00 16.7 27.4 10.3 20:00 16.7 28.2 11.2 21:00 14.5 28.2 13.4 22:00 13.9 25.0 10.7 23:00 14.0 28.5 14.2 Average 12.5 21.6 8.8 Max 16.7 28.5 14.2 Max Hour 20:00 23:00 23:00 Min 6.7 12.1 5.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -5.39% Date Printed: 4/13/2026 01:30 Daily Summary Report Site: Union Cross 4/12/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .036 742.7 64.2 49.8 01:00 .045 742.8 65.7 46.7 02:00 .045 743.0 63.4 46.2 03:00 .042 743.2 60.1 46.4 04:00 .038 743.8 57.2 46.2 05:00 .037 744.0 55.8 47.0 06:00 .037 744.7 55.6 48.0 07:00 .040 745.2 57.2 50.1 08:00 .043 745.1 59.3 51.8 09:00 .046 745.4 62.2 53.0 10:00 .051 745.5 65.0 53.6 11:00 .053 745.2 68.8 54.7 12:00 .055 744.8 71.9 55.8 13:00 .058 744.1 75.5 57.0 14:00 .058 743.5 78.7 57.6 15:00 .059 742.8 80.0 56.8 16:00 .063 742.7 80.2 55.7 17:00 .063 742.7 79.0 55.4 18:00 .056 742.5 76.7 54.6 19:00 .051 742.5 73.1 52.7 20:00 .052 742.6 71.3 51.9 21:00 .055 742.8 70.6 51.1 22:00 .055 C 742.8 69.2 50.8 23:00 C 742.8 68.5 53.3 Average .049 743.6 67.8 51.9 Max .063 745.5 80.2 57.6 Max Hour 17:00 10:00 16:00 14:00 Min .036 742.5 55.6 46.2 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 12-Apr-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 12-Apr-2026 22:50:00 23:50:00 0.07 0.07 .05% 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