Date Printed: 5/20/2026 01:30 Daily Summary Report Site: Clemmons Middle 5/19/2026 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm ug/m3 ug/m3 ug/m3 00:00 .037 10.8 19.1 8.3 01:00 .036 11.4 19.6 8.1 02:00 .038 12.0 21.3 9.3 03:00 .033 11.4 19.5 8.0 04:00 .030 11.9 19.0 7.0 05:00 .024 12.7 19.1 6.3 06:00 .027 13.3 37.4 24.0 07:00 .037 12.5 25.5 13.0 08:00 .046 15.9 26.7 10.8 09:00 .058 16.1 31.5 15.3 10:00 .060 14.1 25.5 11.3 11:00 .057 11.9 22.9 11.0 12:00 .070 B 12.0 22.6 10.6 13:00 .066 11.0 21.6 10.5 14:00 .066 10.3 20.6 10.3 15:00 .071 10.4 23.4 12.9 16:00 .075 9.8 20.9 11.1 17:00 .072 8.1 20.2 12.1 18:00 .066 7.8 17.7 9.9 19:00 .061 9.9 23.5 13.6 20:00 .059 13.0 51.6 38.6 21:00 .047 10.6 26.3 15.6 22:00 .049 C 9.9 20.6 10.6 23:00 C 10.4 22.5 12.0 Average .051 11.5 24.1 12.5 Max .075 16.1 51.6 38.6 Max Hour 16:00 09:00 20:00 20:00 Min .024 7.8 17.7 6.3 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-May-2026 22:50:00 23:20:00 0.002 0.0 0.00 PREC 19-May-2026 22:50:00 23:50:00 0.071 0.07 2.61% Date Printed: 5/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (A) 5/19/2026 Interval: 001h Ozone NO NO2 NOx SO2 Time ppm ppb ppb ppb ppb 00:00 .036 .1 6.7 6.8 -.1 01:00 .039 .1 6.1 6.3 .1 02:00 .040 .1 3.9 4.1 .2 03:00 .038 .1 3.6 3.7 .0 04:00 .037 .2 3.5 3.7 -.2 05:00 .034 .2 4.8 5.1 -.2 06:00 .033 .7 6.0 6.8 .0 07:00 .038 .8 5.3 6.1 .3 08:00 .046 .7 4.7 5.4 .0 09:00 .053 .4 3.3 3.7 -.1 10:00 .059 .3 2.6 2.9 -.2 11:00 .057 .2 1.9 2.1 -.3 12:00 .062 .1 1.9 2.1 .0 13:00 .069 .1 2.4 2.5 .3 14:00 .063 .1 2.3 2.5 -.3 15:00 .067 .1 C 2.3 C 2.4 C -.3 16:00 .073 C C C -.3 17:00 .074 .1 C 3.2 C 3.4 C -.3 18:00 .067 .1 4.9 5.0 -.3 19:00 .061 .0 6.0 6.1 -.3 C 20:00 .052 .1 8.1 8.2 C 21:00 .050 .0 6.0 6.1 -.3 C 22:00 .047 C .0 4.7 4.8 -.3 23:00 C .1 5.1 5.2 -.2 Average .051 .2 4.3 4.5 -.1 Max .074 .8 8.1 8.2 .3 Max Hour 17:00 07:00 20:00 20:00 13:00 Min .033 .0 1.9 2.1 -.3 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 19-May-2026 15:46:00 16:11:00 66.5 70 -4.95% GPT-PS 19-May-2026 15:46:00 16:18:00 0.5 0.0 .52 GPTZ 19-May-2026 15:46:00 16:38:00 215.4 225 -4.23% GPT-PREC 19-May-2026 15:46:00 17:08:00 151 155 -2.53% NO2 GPT-PREC 19-May-2026 15:46:00 17:08:00 65.3 70 -6.61% NO2 Precision NO2_Diff PRECDIFF 19-May-2026 17:15:00 17:15:05 64.3 65.37 -1.48% NOx NOx_Auto NO-PREC 19-May-2026 15:46:00 16:11:00 66.8 70 -4.55% Ozone O3_Auto ZERO 19-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-May-2026 22:50:00 23:50:00 0.067 0.07 -3.86% SO2 SO2_Auto ZERO 19-May-2026 19:46:00 20:11:00 -0.5 0.0 -.55 SPAN 19-May-2026 19:46:00 20:36:00 88.7 90 -1.43% PREC 19-May-2026 19:46:00 21:01:00 38.8 40 -2.82% Date Printed: 5/20/2026 01:30 Daily Summary Report Site: Hattie Avenue (B) 5/19/2026 Interval: 001h PM2.5 PM10 STP PM Coarse Time ug/m3 ug/m3 ug/m3 00:00 12.1 21.4 8.9 01:00 13.9 22.7 8.4 02:00 13.7 25.5 11.4 03:00 13.6 23.0 9.1 04:00 12.7 22.1 9.2 05:00 12.9 22.3 9.2 06:00 12.9 22.9 9.7 07:00 14.6 24.8 9.7 08:00 17.9 31.7 12.8 09:00 19.1 36.5 15.9 10:00 17.0 32.1 13.7 11:00 13.5 24.7 10.0 12:00 12.5 25.1 11.3 13:00 12.1 24.6 11.1 14:00 10.7 22.5 10.5 15:00 10.7 21.6 9.7 16:00 10.5 25.1 13.2 17:00 9.4 24.3 13.6 18:00 8.9 21.7 11.7 19:00 9.4 20.7 10.5 20:00 10.5 24.3 13.0 21:00 9.7 20.1 9.8 22:00 9.6 19.6 9.5 23:00 10.2 19.5 8.9 Average 12.4 24.1 10.8 Max 19.1 36.5 15.9 Max Hour 09:00 09:00 09:00 Min 8.9 19.5 8.4 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.82% Date Printed: 5/20/2026 01:30 Daily Summary Report Site: Union Cross 5/19/2026 Interval: 001h Ozone Barometric Pres. Temperature (°F) Dew Point (°F) Time ppm mmHg DegF DegF 00:00 .039 742.0 73.7 61.2 01:00 .041 742.0 71.6 61.0 02:00 .036 741.9 69.6 61.0 03:00 .034 741.7 68.3 61.1 04:00 .029 741.6 67.1 61.1 05:00 .030 741.8 66.3 61.3 06:00 .032 742.1 68.2 61.9 07:00 .040 742.1 72.3 63.0 08:00 .047 742.2 76.4 63.8 09:00 .053 742.1 79.5 64.3 10:00 .056 742.0 82.5 65.4 11:00 .060 741.5 85.2 66.3 12:00 .067 741.1 87.4 66.7 13:00 .064 740.6 89.1 66.9 14:00 .070 740.1 89.8 66.6 15:00 .077 739.8 91.0 67.1 16:00 .081 739.5 90.4 66.1 17:00 .079 739.5 89.6 65.8 18:00 .065 739.4 86.6 64.2 19:00 .057 739.5 82.6 62.0 20:00 .053 739.4 79.7 60.5 21:00 .047 739.8 77.9 59.6 22:00 .039 C 740.0 74.9 58.8 23:00 C 740.1 72.7 58.6 Average .052 740.9 78.8 63.0 Max .081 742.2 91.0 67.1 Max Hour 16:00 08:00 15:00 15:00 Min .029 739.4 66.3 58.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-May-2026 22:50:00 23:20:00 0 0.0 0.00 PREC 19-May-2026 22:50:00 23:50:00 0.069 0.07 -.35% 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