import numpy as np
import matplotlib.pyplot as plt

data = np.loadtxt('random_timestamp.txt')

print(data)

sorted_data = np.sort(data)

yvals=np.arange(len(sorted_data))/float(len(sorted_data)-1)

plt.plot(sorted_data,yvals)

plt.show()

[1.37969832e+09 1.37969826e+09 1.37969682e+09 1.37969814e+09
 1.37969802e+09 1.37969856e+09 1.37969664e+09 1.37969676e+09
 1.37969940e+09 1.37969976e+09 1.37969850e+09]