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__    __     ___                 ___      _____   
\ \\ / //   / _ \\      ___     / _ \\   /  ___|| 
 \ \/ //   | / \ ||    /   ||  / //\ \\ | // __   
  \  //    | \_/ ||   | [] || |  ___  ||| \\_\ || 
   \//      \___//     \__ || |_||  |_|| \____//  
    `       `---`       -|_|| `-`   `-`   `---`   
                         `-`

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發送短信 : Cumulative sum control charts for monitoring process mean and/or variance