Which among the following is measured by Dobson unit ?

Q. Which among the following is measured by Dobson unit ?
Answer: Ozone concentration
Notes: Dobson is the most common unit for measuring ozone concentration. One Dobson unit is the number of molecules of ozone that would be required to create a layer of pure ozone 0.01 millimetres thick at a temperature of 0 degree Celsius and pressure of 1 atmosphere.

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