Hello! I'm a rookie and I would like to import .ASC file. It's a table with 2 columns separated by a space. I want to separate both (in x and y) and then link them via transpose command. How do I get from the raw data to two separated sets of data? So far my approach has been:

asc = 
  SemanticImport["ref 1.asc" , <|1 -> Automatic|>, 
   "List", ExcludedLines -> Range[1, 56], Delimiters -> " "];

The output is:

{"4000.000000   99.579746", "3999.000000  99.571567", "3998.000000 
99.565144", "3997.000000    99.563823", "3996.000000   99.567302", 
"3995.000000    99.572190", "3994.000000   99.574877", "3993.000000  
99.573919", "3992.000000    99.570546", "3991.000000   99.567511", 
"3990.000000    99.567216", "3989.000000   99.570202", "3988.000000  
99.575037", "3987.000000    99.579679", "3986.000000   99.583246", 
"3985.000000    99.586611", ...

and so on