The nose of each horse is the 1st dose percentage and the behind of each horse is the 2nd dose percentage.
Data Sources: 12+ data is obtained from the excellent:
covidlive.com.au.
All other age groups come from data compiled and organized by
Ken Tsang, with the original data sources being the Department of Health for most data and WA second dose data prior to 1st July 2021 coming from WA Health.
The (very bad) source code is
here.
The horse's rear overtaking the head is a feature not a bug. Sorry if you are on mobile, it's probably horribly broken.