0 is the weakest and 10 is the strongest
Fun fact: Most people watch the japan earthquake on 11 March 2011 It occurs in 2:46PM HIt in Fukushima, Miyagi, Akita, Iwate, Yamagata Prefecture. and it continue spread that is 5- is Tokyo, Ibaraki, Chiba, Saitama and Niigata Province.
