Date Printed: 5/1/2025 02:00 Daily Summary Report Site: Clemmons Middle 4/30/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm µg/m3 µg/m3 µg/m3 00:00 .027 8.0 14.1 6.0 01:00 .025 8.6 14.3 5.7 02:00 .026 8.9 15.3 6.4 03:00 .022 9.3 14.7 5.3 04:00 .024 9.4 16.4 7.0 05:00 .019 9.8 15.4 5.5 06:00 .018 10.0 26.6 16.6 07:00 .022 D 10.3 27.7 17.3 08:00 D 10.3 19.9 9.6 09:00 D 13.0 26.4 13.3 10:00 .041 D 10.5 19.3 8.8 11:00 .046 10.7 22.1 11.4 12:00 .047 10.5 20.0 9.5 13:00 .047 10.8 20.6 9.8 14:00 .048 10.7 21.6 10.8 15:00 .049 10.9 22.1 11.2 16:00 .050 11.0 26.7 15.6 17:00 .050 11.1 25.6 14.4 18:00 .044 8.7 17.7 8.9 19:00 .040 7.6 17.0 9.3 20:00 .035 9.1 45.1 36.0 21:00 .032 7.3 14.6 7.2 22:00 .025 C 7.6 16.1 8.5 23:00 C 7.7 14.5 6.8 Average .035 9.6 20.5 10.8 Max .050 13.0 45.1 36.0 Max Hour 17:00 09:00 20:00 20:00 Min .018 7.3 14.1 5.3 Count 21 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 30-Apr-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 30-Apr-2025 22:50:00 23:50:00 0.067 0.07 -2.99% Date Printed: 5/1/2025 02:00 Daily Summary Report Site: Hattie Avenue (A) 4/30/2025 Interval: 001h Ozone Ozone: Calibrator NO NO2 NOx SO2 Time ppm ppm ppb ppb ppb ppb 00:00 .035 0 .0 2.7 2.7 .0 01:00 .031 0 .0 3.4 3.3 .1 02:00 .029 0 .0 3.8 3.8 .0 03:00 .030 0 .0 3.1 3.1 .1 04:00 .027 0 .0 3.4 3.4 .1 05:00 .024 0 .0 4.7 4.8 .0 06:00 .024 0 .3 D 5.2 D 5.6 D .0 07:00 .027 0 D D D .1 08:00 .030 0.0251 D D D .2 09:00 .035 0.0091 D D D .2 10:00 .042 0 D D D .1 11:00 .045 0 .1 1.8 1.9 .1 12:00 .046 0 .0 1.7 1.7 .1 13:00 .049 0 .0 2.1 2.1 .1 14:00 .050 0 .0 2.2 2.2 .1 15:00 .048 0 .0 C 2.2 C 2.2 C .1 16:00 .049 0.0076 C C C .1 17:00 .049 0 .0 C 4.4 C 4.4 C .2 18:00 .039 0 .0 4.2 4.2 .1 19:00 .037 0 .0 3.8 3.7 .0 20:00 .024 0 .0 7.7 7.7 C 21:00 .020 0 .0 8.0 8.1 .1 C 22:00 .017 C 0 .0 5.8 5.9 .1 23:00 C 0.0343 .2 11.5 11.7 .1 Average .035 0.0031 .0 4.3 4.3 .0 Max .050 0.0343 .3 11.5 11.7 .2 Max Hour 14:00 23:00 06:00 23:00 23:00 17:00 Min .017 0 .0 1.7 1.7 .0 Count 23 24 19 19 19 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error NO NOx_Auto NO-PREC 30-Apr-2025 15:46:00 16:11:00 66.9 70 -4.4% GPT-PS 30-Apr-2025 15:46:00 16:18:00 0.3 0.0 .39 GPTZ 30-Apr-2025 15:46:00 16:38:00 215.2 225 -4.32% GPT-PREC 30-Apr-2025 15:46:00 17:08:00 149.1 155 -3.76% NO2 GPT-PREC 30-Apr-2025 15:46:00 17:08:00 66.9 70 -4.31% NO2 Precision NO2_Diff PRECDIFF 30-Apr-2025 17:15:00 17:15:05 66.1 66.982 -1.3% NOx NOx_Auto NO-PREC 30-Apr-2025 15:46:00 16:11:00 66.9 70 -4.37% Ozone O3_Auto ZERO 30-Apr-2025 22:50:00 23:20:00 -0.001 0.0 0.00 PREC 30-Apr-2025 22:50:00 23:50:00 0.067 0.07 -3.95% SO2 SO2_Auto ZERO 30-Apr-2025 20:00:00 20:20:00 0.1 0.0 .12 SPAN 30-Apr-2025 20:00:00 20:40:00 87.6 89.6 -2.2% PREC 30-Apr-2025 20:00:00 21:00:00 38.7 40 -3.02% Date Printed: 5/1/2025 02:00 Daily Summary Report Site: Hattie Avenue (B) 4/30/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time µg/m3 µg/m3 µg/m3 00:00 9.1 15.8 6.5 01:00 9.5 15.6 6.0 02:00 10.0 18.0 7.8 03:00 9.8 16.5 6.5 04:00 9.9 16.3 6.3 05:00 10.4 17.0 6.4 06:00 10.2 17.9 7.6 07:00 10.7 20.0 9.0 08:00 11.3 20.8 9.0 09:00 B B B 10:00 11.8 23.0 10.3 11:00 11.3 20.5 8.3 12:00 11.8 22.3 9.4 13:00 12.0 21.9 8.9 14:00 12.0 22.5 9.3 15:00 10.8 20.9 9.1 16:00 10.6 23.6 12.0 17:00 12.0 24.6 11.6 18:00 10.2 28.8 18.1 19:00 6.5 22.0 15.2 20:00 7.4 17.3 9.7 21:00 7.2 14.6 7.3 22:00 7.3 16.7 9.3 23:00 8.6 19.3 10.6 Average 10.0 19.8 9.3 Max 12.0 28.8 18.1 Max Hour 17:00 18:00 18:00 Min 6.5 14.6 6.0 Count 23 23 23 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.02% Date Printed: 5/1/2025 02:00 Daily Summary Report Site: Union Cross 4/30/2025 Interval: 001h Ozone Temperature Dew Point Wind Speed Wind Direction Relative Humidity Barometric Pres. Time ppm DegC DegC MPH DEG PERCENT mmHg 00:00 .032 19.3 14.9 4.1 226 77.6 739.4 01:00 .026 18.6 14.9 3.5 219 81.5 738.9 02:00 .025 17.7 14.9 3.7 217 85.9 738.4 03:00 .027 17.6 15.0 4.0 229 86.9 738.3 04:00 .025 17.3 15.0 3.5 225 88.2 738.3 05:00 .023 16.8 15.0 3.3 224 90.6 738.5 06:00 .022 17.0 15.2 3.5 222 90.6 738.9 07:00 .027 18.2 15.5 4.6 239 86.2 739.0 08:00 .031 20.5 16.2 4.4 267 78.2 739.2 09:00 .034 22.4 17.0 4.0 260 72.6 739.1 10:00 .040 24.9 17.9 3.9 250 64.8 739.1 11:00 .046 26.5 18.1 4.0 231 57.6 738.8 12:00 .047 27.3 18.1 4.6 238 53.4 738.4 13:00 .047 28.1 18.5 4.0 234 51.6 737.7 14:00 .048 28.7 18.5 5.7 232 48.8 737.1 15:00 .048 29.0 18.5 4.6 232 47.1 736.7 16:00 .048 27.5 18.3 3.5 133 53.8 736.5 17:00 .051 27.4 18.3 3.5 207 54.3 736.6 18:00 .048 25.8 17.8 5.1 266 59.7 737.0 19:00 .043 22.0 16.2 2.9 182 70.9 737.4 20:00 .036 21.3 15.2 2.1 186 69.2 737.3 21:00 .028 20.2 16.0 1.5 114 78.4 737.6 22:00 .027 C 19.8 16.1 1.0 145 81.5 738.0 23:00 C 19.3 16.2 1.6 207 84.4 737.9 Average .036 22.2 16.6 3.1 227 71.4 738.0 Max .051 29.0 18.5 5.7 267 90.6 739.4 Max Hour 17:00 15:00 14:00 14:00 08:00 06:00 00:00 Min .022 16.8 14.9 1.0 114 47.1 736.5 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 30-Apr-2025 22:50:00 23:20:00 -0.0015 0.0 0.00 PREC 30-Apr-2025 22:50:00 23:50:00 0.0694 0.07 -1.22% 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