Turbo Mode Valid to # of digits means that the list will only add the pi approximation only if that amount of pi digits is correct. Radius is of the circle, but it is also half the square side. Valid to 3 digits is recommended.
More: https://www.analytics-link.com/post/2017/04/27/estimating-pi-by-throwing-darts I was able to get 3935 (probably less, since some are equivalent fractions) valid approximations, up to 3 digits. Here is a pdf of it (Total of 90 pages!): file:///C:/Users/Yusuf/Downloads/%7B3935%20Valid%20Pi%20Approximations%7D.pdf