Jesse Livermore documented his “Secret Market Key” in his book “How to Trade in Stock”. And he exercised his method by recording the stock quote numbers with a specially crafted table at the end of the book.
But not everyone has the intuation to numbers, Livermore is certainly gifted on it.
“I was quick at figures. At school I did three years of arithmetic in one . I was particularly good at mental arithmetic.”
from “Reminiscences of a Stock Operator”.
A lot of people try to decode what is the secret behind the table. One of the best is KH Tang’s blog post And if you plot the data, it is much more easier to grasp how he did it.