May I know how the support value in the right part is calculated? for example, , why its support = 60%? Thank you.

Sequential Pattern Mining: Example Obiect Timestam Events 1,2.4 2,3 Minsup-50% Examples of Frequent Subsequences 1,2)> s-6090 s-6090 s-8090 s-80% s-80% s-60% s-60% s-60% s-60% 2,3,4 (24)> (2)(2) > 4(1)(23) > 4(2)(23) > 2,3,4 2,4,5 3, 4 4.5 , 4, 5