發送短信 : Day of the Week Effects on the SES

 _    _     _____     ______   _    _   __    __  
| \  / ||  |  ___||  /_   _// | || | || \ \\ / // 
|  \/  ||  | ||__      | ||   | || | ||  \ \/ //  
| .  . ||  | ||__     _| ||   | \\_/ ||   \  //   
|_|\/|_||  |_____||  /__//     \____//     \//    
`-`  `-`   `-----`   `--`       `---`       `