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

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Text this: Ground layer depth and the effect of GPR