china.csv log0	0	0.900729108245
china.csv log1	10	0.8459761263
china.csv log2	20	0.90241046832
china.csv log3	30	0.848334054522
china.csv log4	40	0.847101449275
china.csv log5	50	0.825653798257
china.csv log6	60	0.853949329359
china.csv log7	70	0.828341855369
china.csv log8	80	0.804943219773