I did that

https://docs.google.com/forms/d/e/1FAIpQLSc-h99CmvqE2Bntn8LW2wgoDaKxjNkMrADX6PfouMb_Hwy-7A/viewanalytics

https://www.reddit.com/r/SampleSize/comments/152aenr/how_are_you_helping_out_the_environment_anyone/

(Warning: non libre javascript)