Date Printed: 4/20/2025 02:00 Daily Summary Report Site: Clemmons Middle 4/19/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm µg/m3 µg/m3 µg/m3 00:00 .043 11.3 19.9 8.6 01:00 .039 11.0 18.8 7.7 02:00 .036 10.0 18.1 8.1 03:00 .033 8.4 15.9 7.4 04:00 .033 7.5 15.4 7.9 05:00 .031 7.1 14.3 7.1 06:00 .031 7.1 14.8 7.7 07:00 .034 7.3 15.5 8.2 08:00 .036 9.7 21.4 11.6 09:00 .039 10.7 20.7 9.9 10:00 .042 12.0 24.2 12.1 11:00 .044 12.6 27.2 14.6 12:00 .045 13.3 29.1 15.7 13:00 .049 14.6 32.3 17.7 14:00 .050 14.7 30.8 16.0 15:00 .050 13.3 25.6 12.3 16:00 .052 13.0 24.1 11.0 17:00 .051 13.3 24.1 10.7 18:00 .049 13.8 30.4 16.5 19:00 .044 13.4 24.2 10.7 20:00 .039 14.3 25.3 11.0 21:00 .040 15.0 25.3 10.3 22:00 .039 C 15.3 26.3 10.9 23:00 C 14.8 24.6 9.7 Average .041 11.8 22.8 10.9 Max .052 15.3 32.3 17.7 Max Hour 16:00 22:00 13:00 13:00 Min .031 7.1 14.3 7.1 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Apr-2025 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 19-Apr-2025 22:50:00 23:50:00 0.067 0.07 -3.64% Date Printed: 4/20/2025 02:00 Daily Summary Report Site: Hattie Avenue (A) 4/19/2025 Interval: 001h Ozone Ozone: Calibrator NO NO2 NOx SO2 Time ppm ppm ppb ppb ppb ppb 00:00 .044 0 .0 2.2 2.1 .2 01:00 .041 0 .0 2.2 2.2 .2 02:00 .038 0 .0 2.3 2.3 .1 03:00 .033 0 .0 2.6 2.7 .0 04:00 .032 0 .0 2.3 2.3 .0 05:00 .030 0 .0 2.1 2.1 .0 06:00 .030 0 .4 2.8 3.2 .0 07:00 .034 0 .0 1.9 1.9 .0 08:00 .036 0 .0 2.0 2.1 .1 09:00 .039 0 .1 1.8 1.9 .1 10:00 .043 0 .1 1.8 2.0 .1 11:00 .046 0 .0 1.8 1.9 .1 12:00 .048 0 .0 2.2 2.3 .1 13:00 .050 0 .0 2.1 2.1 .1 14:00 .052 0 .0 1.9 1.9 .2 15:00 .052 0 .0 C 1.8 C 1.9 C .2 16:00 .052 0.0075 C C C .2 17:00 .052 0 .0 C 2.7 C 2.7 C .1 18:00 .050 0 .0 3.4 3.3 .1 19:00 .045 0 .0 6.6 6.5 .1 20:00 .042 0 .0 6.7 6.7 C 21:00 .038 0 .0 7.2 7.2 .3 C 22:00 .038 C 0 .0 5.6 5.5 .2 23:00 C 0.0343 .0 5.1 5.1 .2 Average .041 0.0017 .0 3.0 3.1 .1 Max .052 0.0343 .4 7.2 7.2 .3 Max Hour 17:00 23:00 06:00 21:00 21:00 21:00 Min .030 0 .0 1.8 1.9 .0 Count 23 24 23 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 19-Apr-2025 15:46:00 16:11:00 66.5 70 -4.93% GPT-PS 19-Apr-2025 15:46:00 16:18:00 0.3 0.0 .4 GPTZ 19-Apr-2025 15:46:00 16:38:00 215.3 225 -4.3% GPT-PREC 19-Apr-2025 15:46:00 17:08:00 149.5 155 -3.52% NO2 GPT-PREC 19-Apr-2025 15:46:00 17:08:00 66 70 -5.67% NO2 Precision NO2_Diff PRECDIFF 19-Apr-2025 17:15:00 17:15:05 65.7 66.03 -.37% NOx NOx_Auto NO-PREC 19-Apr-2025 15:46:00 16:11:00 66.5 70 -4.91% Ozone O3_Auto ZERO 19-Apr-2025 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 19-Apr-2025 22:50:00 23:50:00 0.065 0.069 -4.81% SO2 SO2_Auto ZERO 19-Apr-2025 20:00:00 20:20:00 0 0.0 .01 SPAN 19-Apr-2025 20:00:00 20:40:00 87.9 89.6 -1.88% PREC 19-Apr-2025 20:00:00 21:00:00 38.8 40 -2.88% Date Printed: 4/20/2025 02:00 Daily Summary Report Site: Hattie Avenue (B) 4/19/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time µg/m3 µg/m3 µg/m3 00:00 11.0 21.6 10.5 01:00 10.9 20.2 9.2 02:00 10.5 19.1 8.6 03:00 9.9 18.9 9.1 04:00 8.4 17.3 8.9 05:00 7.5 15.0 7.5 06:00 7.1 14.0 6.9 07:00 7.7 15.7 7.8 08:00 8.7 17.0 8.1 09:00 11.2 24.1 12.4 10:00 12.7 31.5 18.2 11:00 13.2 25.9 12.0 12:00 14.1 25.3 10.5 13:00 15.1 29.1 13.0 14:00 16.2 28.7 11.5 15:00 14.7 29.3 13.5 16:00 14.1 28.1 12.9 17:00 14.6 29.8 14.2 18:00 14.2 28.2 13.1 19:00 14.7 27.6 12.2 20:00 15.6 27.2 11.0 21:00 16.3 26.5 9.7 22:00 16.3 28.3 11.5 23:00 16.3 26.3 9.7 Average 12.5 23.9 10.9 Max 16.3 31.5 18.2 Max Hour 23:00 10:00 10:00 Min 7.1 14.0 6.9 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -2.88% Date Printed: 4/20/2025 02:00 Daily Summary Report Site: Union Cross 4/19/2025 Interval: 001h Ozone Temperature Dew Point Wind Speed Wind Direction Relative Humidity Barometric Pres. Time ppm DegC DegC MPH DEG PERCENT mmHg 00:00 .042 18.3 12.7 7.9 221 71.6 740.8 01:00 .040 17.5 12.9 6.2 224 76.9 740.7 02:00 .038 16.7 13.2 6.1 227 82.5 740.5 03:00 .035 16.0 13.6 4.9 222 87.7 740.5 04:00 .035 16.3 14.2 6.2 226 89.2 740.6 05:00 .032 16.0 14.5 4.9 216 92.1 740.8 06:00 .030 16.2 14.7 4.6 218 92.2 741.2 07:00 .032 17.3 15.0 5.3 224 88.3 741.7 08:00 .035 18.6 15.2 6.0 226 82.8 742.1 09:00 .039 B 20.1 15.4 6.4 237 76.1 742.2 10:00 .042 21.7 16.0 6.7 226 70.8 742.3 11:00 .045 22.7 16.4 7.2 214 68.2 742.0 12:00 .047 23.3 16.7 8.4 229 66.5 741.6 13:00 .049 24.5 17.1 7.6 224 62.9 741.5 14:00 .054 25.8 17.3 8.2 231 57.4 741.2 15:00 .053 26.6 17.4 8.0 231 53.9 741.0 16:00 .054 26.9 17.4 8.3 234 52.0 740.8 17:00 .055 26.5 17.0 5.7 233 52.2 740.9 18:00 .049 25.1 16.5 3.3 215 56.7 741.2 19:00 .044 23.6 16.2 2.9 207 62.7 741.4 20:00 .042 23.2 16.3 4.2 215 65.1 741.9 21:00 .041 22.7 16.1 4.4 220 67.1 742.0 22:00 .040 C 22.1 15.9 3.9 223 68.4 741.7 23:00 C 22.1 15.6 4.4 223 67.1 741.7 Average .042 21.2 15.6 5.8 224 71.2 741.3 Max .055 26.9 17.4 8.4 237 92.2 742.3 Max Hour 17:00 16:00 15:00 12:00 09:00 06:00 10:00 Min .030 16.0 12.7 2.9 207 52.0 740.5 Count 23 24 24 24 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 19-Apr-2025 22:50:00 23:20:00 -0.0009 0.0 0.00 PREC 19-Apr-2025 22:50:00 23:50:00 0.0693 0.07 -.81% 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