Mean per cent filter ventilation corresponding to ‘Lights’ and colour-named descriptor categories among major brands
| Category | Mean per cent filter ventilation | ||
|---|---|---|---|
| Marlboro | Camel | Newport | |
| Year: 2009 | |||
| Light | 29% | 32% | 23% |
| Ultra-light | 46% | 56% | − |
| Year: 2010 | |||
| Blue | − | 29% | 28% |
| Gold | 29% | 38% | 34% |
| Silver | 50% | 40% | − |
| Year: 2011 | |||
| Blue | − | 34% | 32% |
| Gold | 28% | 40% | 36% |
| Silver | 47% | 42% | − |