Date Printed: 4/29/2025 02:00 Daily Summary Report Site: Clemmons Middle 4/28/2025 Interval: 001h Ozone PM2.5 PM10 LC PM Coarse Time ppm µg/m3 µg/m3 µg/m3 00:00 .013 6.8 11.4 4.5 01:00 .011 6.7 10.4 3.6 02:00 .007 6.9 11.4 4.5 03:00 .005 6.8 11.0 4.1 04:00 .003 7.2 12.6 5.3 05:00 .001 6.8 11.9 5.1 06:00 .002 6.4 12.2 5.8 07:00 .013 7.4 14.9 7.4 08:00 .028 6.1 14.2 8.1 09:00 .040 5.7 15.3 9.6 10:00 .052 4.4 12.9 8.4 11:00 .055 4.2 11.6 7.4 12:00 .055 3.7 10.0 6.3 13:00 .055 4.2 10.8 6.5 14:00 .055 4.4 10.8 6.3 15:00 .055 4.7 12.6 7.8 16:00 .054 4.6 13.7 9.0 17:00 .054 5.1 14.9 9.8 18:00 .050 7.4 20.2 12.7 19:00 .044 9.8 64.3 54.5 20:00 .041 10.1 35.2 25.0 21:00 .030 9.2 21.7 12.4 22:00 .031 C 9.4 16.9 7.4 23:00 C 9.8 16.3 6.4 Average .032 6.5 16.5 9.9 Max .055 10.1 64.3 54.5 Max Hour 15:00 20:00 19:00 19:00 Min .001 3.7 10.0 3.6 Count 23 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error Ozone O3_Auto ZERO 28-Apr-2025 22:50:00 23:20:00 0 0.0 0.00 PREC 28-Apr-2025 22:50:00 23:50:00 0.067 0.07 -3.08% Date Printed: 4/29/2025 02:00 Daily Summary Report Site: Hattie Avenue (A) 4/28/2025 Interval: 001h Ozone Ozone: Calibrator NO NO2 NOx SO2 Time ppm ppm ppb ppb ppb ppb 00:00 .015 0 .1 10.4 10.6 .0 01:00 .013 0 .1 8.2 8.4 .0 02:00 .016 0 .0 8.5 8.6 .0 03:00 .018 0 .0 8.3 8.3 .1 04:00 .017 0 .0 7.2 7.3 .0 05:00 .009 0 .7 9.7 10.4 .0 06:00 .015 0 2.7 11.3 14.0 .1 07:00 .027 0 2.0 6.1 8.2 .1 08:00 .037 0 .8 3.6 4.5 .1 09:00 .047 0 .6 3.3 3.9 .1 10:00 .053 0 .3 2.7 3.0 .2 11:00 .058 0 .1 2.5 2.6 .2 12:00 .059 0 .0 2.2 2.3 .2 13:00 .058 0 .0 1.8 1.8 .2 14:00 .059 0 .0 2.0 2.1 .2 15:00 .060 0 .0 C 2.2 C 2.3 C .2 16:00 .058 0.0076 C C C .2 17:00 .057 0 .0 C 2.2 C 2.3 C .2 18:00 .054 0 .0 2.8 2.7 .1 19:00 .046 0 .0 6.1 6.0 .2 20:00 .042 0 .0 7.2 7.1 C 21:00 .039 0 .0 7.1 7.1 .1 C 22:00 .041 C 0 .0 5.9 5.8 .1 23:00 C 0.0344 .0 5.2 5.2 .1 Average .039 0.0017 .3 5.5 5.8 .1 Max .060 0.0344 2.7 11.3 14.0 .2 Max Hour 15:00 23:00 06:00 06:00 06:00 19:00 Min .009 0 .0 1.8 1.8 .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 28-Apr-2025 15:46:00 16:11:00 66.5 70 -4.88% GPT-PS 28-Apr-2025 15:46:00 16:18:00 0.4 0.0 .44 GPTZ 28-Apr-2025 15:46:00 16:38:00 215 225 -4.41% GPT-PREC 28-Apr-2025 15:46:00 17:08:00 148.8 155 -3.95% NO2 GPT-PREC 28-Apr-2025 15:46:00 17:08:00 66.4 70 -5.08% NO2 Precision NO2_Diff PRECDIFF 28-Apr-2025 17:15:00 17:15:05 66.2 66.442 -.36% NOx NOx_Auto NO-PREC 28-Apr-2025 15:46:00 16:11:00 66.7 70 -4.65% Ozone O3_Auto ZERO 28-Apr-2025 22:50:00 23:20:00 -0.002 0.0 0.00 PREC 28-Apr-2025 22:50:00 23:50:00 0.067 0.07 -3.69% SO2 SO2_Auto ZERO 28-Apr-2025 20:00:00 20:20:00 0 0.0 0.00 SPAN 28-Apr-2025 20:00:00 20:40:00 87.2 89.6 -2.58% PREC 28-Apr-2025 20:00:00 21:00:00 38.6 40 -3.39% Date Printed: 4/29/2025 02:00 Daily Summary Report Site: Hattie Avenue (B) 4/28/2025 Interval: 001h PM2.5 PM10 STP PM Coarse Time µg/m3 µg/m3 µg/m3 00:00 9.0 14.7 6.0 01:00 8.5 13.6 5.4 02:00 8.0 12.6 4.9 03:00 6.9 11.3 4.6 04:00 6.8 11.3 4.9 05:00 7.1 11.3 4.6 06:00 6.7 12.2 5.7 07:00 5.4 11.0 5.7 08:00 5.3 10.7 5.4 09:00 5.0 12.6 7.5 10:00 4.4 15.6 11.0 11:00 4.4 11.3 6.7 12:00 4.2 10.8 6.4 13:00 4.1 10.4 6.0 14:00 4.3 11.1 6.6 15:00 4.5 11.6 6.8 16:00 4.6 13.0 8.0 17:00 4.5 14.0 9.2 18:00 4.9 14.7 9.6 19:00 5.2 14.3 8.9 20:00 6.2 15.2 9.0 21:00 8.3 18.5 10.3 22:00 6.9 14.0 7.2 23:00 7.4 15.2 7.9 Average 5.9 12.9 7.0 Max 9.0 18.5 11.0 Max Hour 00:00 21:00 10:00 Min 4.1 10.4 4.6 Count 24 24 24 Total Calibration Report Parameter Sequence Phase Start Time End Time Value Expected Value % Error 0.0 -3.39% Date Printed: 4/29/2025 02:00 Daily Summary Report Site: Union Cross 4/28/2025 Interval: 001h Ozone Temperature Dew Point Wind Speed Wind Direction Relative Humidity Barometric Pres. Time ppm DegC DegC MPH DEG PERCENT mmHg 00:00 .022 10.3 4.1 .9 162 68.3 742.2 01:00 .018 10.6 4.8 1.0 141 71.0 742.2 02:00 .016 11.3 4.9 1.3 95 67.4 742.2 03:00 .008 10.5 6.3 1.7 38 78.6 742.4 04:00 .005 9.5 6.1 1.1 75 82.4 742.9 05:00 .003 9.2 5.2 2.0 75 79.9 743.3 06:00 .004 10.7 5.8 2.3 56 75.3 743.9 07:00 .021 13.5 5.8 5.2 64 60.9 744.5 08:00 .036 15.8 6.0 4.5 84 50.5 744.8 09:00 .044 18.4 6.4 4.2 106 39.8 744.9 10:00 .049 B 19.8 6.6 3.8 150 33.9 744.8 11:00 .053 20.6 6.9 4.1 173 31.0 744.4 12:00 .055 21.3 7.6 3.7 118 31.4 744.1 13:00 .056 22.2 8.3 3.8 162 30.5 743.7 14:00 .056 23.0 8.9 4.6 222 29.2 743.3 15:00 .055 23.5 9.2 4.6 208 28.3 742.9 16:00 .054 23.4 9.3 4.0 189 29.2 742.7 17:00 .053 23.1 9.1 4.5 203 29.5 742.7 18:00 .049 22.2 8.9 1.9 186 33.1 742.7 19:00 .041 20.0 7.8 1.3 146 39.0 742.7 20:00 .039 18.3 7.3 1.5 140 44.7 743.0 21:00 .039 17.3 6.7 1.4 137 46.8 743.2 22:00 .037 C 16.4 5.8 1.2 160 46.7 743.1 23:00 C 15.7 5.2 1.3 170 47.4 743.1 Average .035 16.9 6.8 1.6 144 48.9 743.3 Max .056 23.5 9.3 5.2 222 82.4 744.9 Max Hour 14:00 15:00 16:00 07:00 14:00 04:00 09:00 Min .003 9.2 4.1 .9 38 28.3 742.2 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 28-Apr-2025 22:50:00 23:20:00 -0.0011 0.0 0.00 PREC 28-Apr-2025 22:50:00 23:50:00 0.069 0.07 -.78% 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