a b/mit-bih-ecg-compression-test-database-1.0.0/12531_04.hea- 

  1
  
12531_04 2 250 5120





  
  

  2
  
12531_04.dat 212 400 12 0 69 -11976 0 ECG signal 0





  
  

  3
  
12531_04.dat 212 400 12 0 84 10555 0 ECG signal 1