Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): 16.8 per million words
Appox. usage (any sense): 0.063 per million words
Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): less than 0.1 per million words
Appox. usage (any sense): less than 0.1 per million words