import matplotlib.pyplot as plt
with open("data1.txt","r",encoding="utf-8") as f :
    lu = f.readlines()
T,F,D = [],[],[]
for ligne in lu :
    if not ligne.startswith("#") :
        t,f,d = [ float(m) for m in ligne.split()]
        T.append(t)
        F.append(f)
        D.append(d)
plt.plot(D,F,"om")
plt.show()