a b/mit-bih-ecg-compression-test-database-1.0.0/11442_04.hea- 

  1
  
11442_04 2 250 5120





  
  

  2
  
11442_04.dat 212 400 12 0 -1 -23263 0 ECG signal 0





  
  

  3
  
11442_04.dat 212 400 12 0 124 -30983 0 ECG signal 1