import numpy as np
import matplotlib.pyplot as plt

data = np.genfromtxt("kyoto.dat")

plt.plot(data[:,0], data[:,1], label="Daily mean")
plt.plot(data[:,0], data[:,2], label="Record high")
plt.plot(data[:,0], data[:,3], label="Record low")

plt.title("Kyoto, 2017")
plt.xlabel("Month")
plt.ylabel("Temperature")

plt.legend()

plt.savefig("kyoto.png")