What is the average thickness of the ozone layer?

Compressed to surface pressure, the ozone layer would be only a few millimetres thick, less than one centimetre.

It is commonly measured as about 300 Dobson units, roughly 3 millimetres.

A thickness greater than one centimetre overstates the thin ozone column.

A range of one centimetre to one metre is far too large for the ozone layer.

Greater than one metre grossly exaggerates its actual thickness.

Despite being so thin, it absorbs most harmful solar ultraviolet radiation.