[MSNoise] autocorrelation resulting problem

Hi,Thomas I'm Sun Jie . I already I 'config' the 'autocorr=Y','stack_method=linear','mov_stack=10','keep_days=Y',and etc. And there in no error in the working process .But in the 'ccftime plot',the waveforms of every '1day-stack'is exactly same,the '10days-stack'is so on.I cannot find the reason why the autocorrelation waveforms is the same.How can i solve this problem? Many thanks.