Ji Wenlin, former vice governor of Hainan province, who was born in July, 1966, is the youngest "tiger".[Photo/CFP]

Age - How old are the tigers?

Forty one out of the 63 investigated officials, or over 60 percent of them, were born between 1950 and 1960. And 15 were born after 1960 and 7 before 1950. Twenty seven of them are aged between 58 and 60.

The oldest one is Zhou Yongkang, former member of the Standing Committee of the Political Bureau of the CPC Central Committee, who was 71 when he was probed last year. The youngest is Ji Wenlin, former vice governor of Hainan province, who was born in July, 1966.

Rankings - How senior are the "tigers"?

There is one national level official, Zhou and three deputy national level officials, Xu Caihou, former vice-chairman of the Central Military Commission, Ling Jihua and Su Rong, both of whom were vice chairmen of the Chinese People's Political Consultative Conference (CPPCC) National Committee.

Seven of them were provincial or ministerial level officials and 52 were of vice provincial or ministerial levels.