Choosing to stay grounded rather than taking a flight could save around 2200 kg CO2 per return trip (see here for full calculation and assumptions).
The CO2 values in the slider have been averaged over a month, and split equally over the four data points, calculated as follows:
Q. How many return flights do you resist a year because you travel by other means, holiday locally or video-conference instead?
Endpoints:
None at all = 0 kg
7 flights or more a year - (2200 x 7 flights) / 12 = 1283.33 kg CO2
Midpoints:
1-3 flights a year - (1283.33) x (1/3) = 427.78 kg CO2
4-6 flights a year - (1283.33) x (2/3) = 855.56 kg CO2
