Date Printed: 3/20/2026 01:30 Daily Summary Report Site: Clemmons Middle 3/19/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .034 6.2 11.3 5.0 01:00 .031 6.5 11.6 5.1 02:00 .027 7.0 11.3 4.3 03:00 .027 7.3 13.0 5.7 04:00 .024 10.3 18.6 8.3 05:00 .012 9.5 18.6 9.0 06:00 .007 10.5 21.3 10.8 07:00 .013 10.6 25.4 14.7 08:00 .030 14.5 21.8 7.2 09:00 .040 9.8 17.1 7.2 10:00 .041 B 8.8 17.8 8.9 11:00 .043 8.3 17.6 9.2 12:00 .048 B 7.4 16.9 9.4 13:00 .053 8.6 18.5 9.8 14:00 .054 10.2 19.8 9.6 15:00 .053 8.4 18.3 9.9 16:00 .053 7.5 17.6 10.0 17:00 .053 7.0 16.9 9.8 18:00 .050 7.3 16.9 9.6 19:00 .048 8.0 19.0 10.9 20:00 .045 15.2 26.7 11.4 21:00 .036 10.4 20.7 10.2 22:00 .035 C 13.0 21.7 8.7 23:00 C 10.7 19.4 8.7 Average .037 9.2 18.2 8.8 Max .054 15.2 26.7 14.7 Max Hour 14:00 20:00 20:00 07:00 Min .007 6.2 11.3 4.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Mar-2026 22:50:00 23:50:00 0.07 0.07 .1% Date Printed: 3/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 3/19/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .031 .4 9.6 10.1 .3 01:00 .029 .2 9.1 9.3 .3 02:00 .025 .2 9.5 9.7 .2 03:00 .022 .2 12.2 12.4 .1 04:00 .023 .3 12.9 13.2 .1 05:00 .014 .6 15.6 16.3 .0 06:00 .010 2.9 21.2 24.2 .1 07:00 .010 13.9 24.9 38.9 .5 08:00 .023 7.0 15.6 22.7 .3 09:00 D 2.2 7.2 9.5 .1 10:00 D 1.4 5.8 7.2 .0 11:00 D .8 4.1 4.9 .0 12:00 .044 .4 2.9 3.3 .0 13:00 .047 D .3 2.7 3.0 .1 14:00 .048 .2 2.8 3.1 .1 15:00 .048 .3 C 2.8 C 3.1 C .1 16:00 .047 C C C .1 17:00 .047 .1 C 3.0 C 3.2 C .1 18:00 .043 .1 5.6 5.7 .1 19:00 .034 .1 12.9 13.1 .1 C 20:00 .023 .4 21.9 22.3 C 21:00 .022 .5 19.0 19.6 .1 C 22:00 .021 C .8 18.7 19.6 .1 23:00 C 1.0 25.4 26.4 .1 Average .030 1.4 11.5 13.0 .1 Max .048 13.9 25.4 38.9 .5 Max Hour 15:00 07:00 23:00 07:00 07:00 Min .010 .1 2.7 3.0 .0 Count 20 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 19-Mar-2026 15:46:00 16:11:00 67.1 70 -4.11% GPT-PS 19-Mar-2026 15:46:00 16:18:00 0.4 0.0 .49 GPTZ 19-Mar-2026 15:46:00 16:38:00 216.8 225 -3.63% GPT-PREC 19-Mar-2026 15:46:00 17:08:00 152 155 -1.9% NO2 GPT-PREC 19-Mar-2026 15:46:00 17:08:00 65.8 70 -5.97% NO2 Precision NO2_Diff PRECDIFF 19-Mar-2026 17:15:00 17:15:05 64.7 65.823 -1.57% NOx NOx_Auto NO-PREC 19-Mar-2026 15:46:00 16:11:00 67.3 70 -3.76% Ozone O3_Auto ZERO 19-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Mar-2026 22:50:00 23:50:00 0.061 0.07 -11.86% SO2 SO2_Auto ZERO 19-Mar-2026 19:46:00 20:11:00 -0.1 0.0 -.11 SPAN 19-Mar-2026 19:46:00 20:36:00 86.7 90 -3.6% PREC 19-Mar-2026 19:46:00 21:01:00 38.2 40 -4.31% Date Printed: 3/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 3/19/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 7.6 12.8 5.7 01:00 8.2 12.5 4.9 02:00 8.8 14.0 6.0 03:00 10.8 15.7 5.7 04:00 12.9 18.2 6.3 05:00 12.5 18.3 6.9 06:00 14.2 22.1 9.3 07:00 16.5 25.4 10.1 08:00 15.8 27.6 12.8 09:00 9.4 17.5 8.5 10:00 9.5 18.7 9.5 11:00 8.5 18.7 10.4 12:00 7.8 19.1 11.3 13:00 7.7 18.0 10.3 14:00 7.5 17.0 9.5 15:00 7.2 18.1 10.8 16:00 6.7 17.0 10.2 17:00 7.1 16.3 9.2 18:00 7.5 16.6 9.2 19:00 8.7 18.9 10.5 20:00 11.3 22.4 11.5 21:00 10.7 21.6 11.4 22:00 14.8 24.5 10.3 23:00 17.7 27.8 10.9 Average 10.3 19.1 9.2 Max 17.7 27.8 12.8 Max Hour 23:00 23:00 08:00 Min 6.7 12.5 4.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -4.31% Date Printed: 3/20/2026 01:30 Daily Summary Report Site: Union Cross 3/19/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .039 742.4 40.9 19.7 01:00 .035 742.4 38.8 18.8 02:00 .037 742.1 37.4 17.9 03:00 .032 741.5 36.5 18.0 04:00 .034 741.2 36.0 18.1 05:00 .030 741.5 35.2 18.5 06:00 .025 742.0 35.2 19.0 07:00 .025 742.3 37.5 20.3 08:00 .034 742.5 41.6 23.2 09:00 .040 742.4 46.8 26.4 10:00 .043 742.2 50.4 28.2 11:00 .045 741.8 52.9 30.3 12:00 .048 741.3 56.5 32.7 13:00 .051 740.8 58.8 34.4 14:00 .053 740.2 59.4 34.9 15:00 .053 739.9 61.2 36.2 16:00 .054 739.5 62.1 36.9 17:00 .052 739.4 62.0 36.9 18:00 .050 739.5 59.3 35.6 19:00 .045 739.9 57.0 34.5 20:00 .043 740.4 55.6 33.7 21:00 .040 740.5 54.1 33.0 22:00 .032 C 740.7 51.4 31.9 23:00 C 740.9 49.9 31.5 Average .040 741.1 49.0 27.9 Max .054 742.5 62.1 36.9 Max Hour 16:00 08:00 16:00 17:00 Min .025 739.4 35.2 17.9 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Mar-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-Mar-2026 22:50:00 23:50:00 0.069 0.07 -.98% 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