Answer:

Under static state, ozone concentration produced by UV photolysis is < 80ppm.

Under dynamic conditions, ozone concentration produced by UV photolysis is < 80ppm.

The half-life of the ozone is about 0.5-1h, and when the temperature is high, the ozone depletion is faster. The consumption of ozone comes from two aspects: on one hand, the spontaneous decomposition is O2, on the other hand, the oxidation and reduction of other substances. In the air, under the influence of various factors, generally in 30 minutes or so it can be basically consumed.