import pylab as pb
#too messy
a = [float(i) for i in open('EKG.txt', 'r').read().split(',')]

det = [int(i<-2500) for i in a]
d = [i-j if i-j>0 else 0 for i, j in zip(det[0:-1] , det[1:])]

pb.plot(a)
pb.plot([i*5000 for i in d])
print ('dlugosc zapisu', len(d)/100.)
print ('ilosc uderzen', (sum(d)))
print( 'tetno', sum(d)*60./(len(d)*1.0/100.))
pb.show()