Weekend/Weekday Ozone Observations in the South Coast Air Basin
Weekend/Weekday Ozone Observations in the South Coast Air Basin
Weekend/Weekday Ozone Observations in the South Coast Air Basin
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160<br />
140<br />
Upland - Saturdays<br />
mean <strong>Ozone</strong> (ppb)<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
80-85<br />
86-90<br />
91-94<br />
95-98<br />
99-00<br />
0<br />
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23<br />
HOUR (PDT)<br />
160<br />
140<br />
Sundays<br />
mean <strong>Ozone</strong> (ppb)<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
80-85<br />
86-90<br />
91-94<br />
95-98<br />
99-00<br />
0<br />
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23<br />
HOUR (PDT)<br />
180<br />
160<br />
Midweek (Tues-Thur)<br />
mean <strong>Ozone</strong> (ppb)<br />
140<br />
120<br />
100<br />
80<br />
60<br />
40<br />
20<br />
80-85<br />
86-90<br />
91-94<br />
95-98<br />
99-00<br />
0<br />
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23<br />
HOUR (PDT)<br />
Figure 3.1-1c. Mean diurnal variations <strong>in</strong> ozone mix<strong>in</strong>g ratios on Saturdays, Sundays, and<br />
weekdays at Upland <strong>in</strong> 1999-2000 and 1980-1998.<br />
3-23
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