a b/brno-university-of-technology-ecg-signal-database-with-annotations-of-p-wave-but-pdb-1.0.0/20.hea 

  1
  
20 2 360 43201





  
  

  2
  
20.dat 16 10895.0956(2043)/\muV 0 0 1226 2577 0 





  
  

  3
  
20.dat 16 18777.6504(10328)/\muV 0 0 6666 26111 0