Matched context for ppm and carbon

The page lists matched contexts for ppm and carbon.

Share - ppm	Share - carbon	Phrase
3.25%	18.33%	{ppm or carbon} monoxide
2.20%	0.59%	{ppm or carbon} content
2.14%	0.16%	{ppm or carbon} co
0.69%	0.18%	{ppm or carbon} concentration
1.75%	0.10%	{ppm or carbon} hydrocarbon
0.59%	0.12%	{ppm or carbon} level
2.18%	0.22%	{ppm or carbon} oxide
8.31%	0.10%	{ppm or carbon} ppm
0.46%	0.01%	amount {ppm or carbon}
0.93%	0.02%	base {ppm or carbon} [perform operation]
1.02%	0.12%	contain {ppm or carbon} [perform operation]