What was the total column ozone amount
over your ?

You can find the total column ozone amount* over your house (or anywhere else you want) for most dates between November, 1978 and December, 1994 and from August, 1996 to today. Just enter the latitude and longitude you want the ozone for and an instrument that was measuring ozone at that time.

Latitude: Longitude:
Year: 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 Month: 1 2 3 4 5 6 7 8 9 10 11 12 Day: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

---

NOTES

*This value is the total column ozone amount, NOT the amount of ozone that causes smog (and that you hear about from your local weatherman). The TOMS measurements are not sensitive enough to measure changes in the amount of ozone so close to the ground. Also, data from ADEOS and Earth Probe TOMS are from near real-time data; the ozone values will change slightly when we produce data using improved calibrations.

**Due to the extreme viewing conditions encountered when the orbit of Meteor-3 drifts near the terminator, only level 3 data taken when the sunlit portion of the orbit is between 9 AM and 3 PM for the first data year and between 8 AM and 4 PM for the remaining two data years are available for access here. Therefore, you can not obtain ozone values for all of the days between May, 1993 and December, 1994. The stricter time constraint for the first data year is due to problems associated with the eruption of Mt. Pinatubo.