Number of staff and visitors:

Number of male staff and visitors:

Number of female staff and visitors:

Estimated number of smokers:

Number of cigarettes smoked per day:

Estimated number of cigarettes smoked per day at work:

Estimated number of butts littered per day:

Estimated number of butts littered per week:

Estimated number of butts littered per year:

Volume of cigarette butts per day: square centimetres ( millilitres)

Volume of cigarette butts per week: square centimetres ( litres)

Volume of cigarette butts per year: square centimetres ( litres)