Ozone loss and extent of ozone hole
Ozone loss and extent of ozone hole—the decline in ozone
from 1980 to 2008 is shown
in Dobson units for September 21 to October 16 each year (the average amount of ozone
in the stratosphere is 300 Dobson units).
Ozone loss and extent of ozone hole—the size of the ozone hole is plotted
for the same time
frame, showing the origin of the hole and its leveling off in the last few years.