Q. How regularly do you turn your back on electric fans or air con and cool off without machines when the weather's hot?
Endpoints:
Never = 0 kg
Always - (2.61 kg x 20 days) x (12 months) = 4.35 kg CO2
Midpoints:
A bit - (4.35) x (1/3) = 1.45 kg CO2
A lot - (4.35) x (2/3) = 2.9 kg CO2