Figure 2 b shows the differences in total ozone between the two simulations on 25 March.

The only crop affected by changes in ozone during April is winter wheat.

Little high in ozone, but not enough to give trouble.

A 10% decrease in ozone could cause a 25% increase in skin cancer.

The reduction in ozone and other particulate matter can benefit human health.

The result, it says, was a four-year reduction in ozone of about 10 percent.

An increase in ozone could cause or exacerbate heart and lung diseases.

The purpose of these reports is to view changes in ozone over time.

There has been a 6% to 10% decrease in ozone since 1980.

Ground and satellite readings confirm a decline in global ozone.