No correlation occurs when values in both sets are unrelated. Higher numbers are better. Higher numbers are better. 1 indicate over-forecasting. The percent of times a forecast of high ozone did not actually occur.
Smaller values are best.
How well the high ozone events were predicted. Useful for evaluating rarer events like high ozone days. It is not affected by a large number of correctly forecasted, low-ozone events. Higher numbers are best. Higher numbers are best.