SZ-coding vs no-coding
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 1 Oct  8 2002 raw_001_021908_101103.dat
 2 Oct 29 2002 raw_001_021028_162111.dat
 3 Feb 14 2003 raw_001_030213_130310.dat
 4             raw_004_030213_141640.dat
 5             raw_007_030213_162518.dat
 6 Mar 17 2003 raw_002_030317_173924.dat
 7             raw_009_030317_215038.dat
 8             raw_018_030317_225433.dat
 9 Apr  6 2003 raw_001_030405_222568.dat
10 May 16 2003 raw_001_030516_191201.dat
11 Jun  4 2003 raw_004_030604_150530.dat
12 Jun 11 2003 raw_001_030611_012357...
13             raw_004_030611_012654...
14 Jun 13 2003 raw_003_030613_151754...
15 Jun 25 2003 raw_004_030625_160608...
16 Mar  4 2004 raw_005_030404_201456.dat
17 Mar  4 2004 raw_013_030404_211727.dat