import matplotlib.pyplot as plt
import numpy as np

# %% Data:
    
M = np.loadtxt('klima.txt', delimiter=' ')

year = M[:, 0]
temp = M[:, 1]


# %% Beregning og plott av middelverdi

temp_mid = np.mean(temp[61:90])
mid = temp_mid*np.ones(len(temp))
print('Middeltemperatur =', f'{temp_mid:.2f}')

plt.close('all')
plt.plot(year, temp, 'r*', year, mid)

plt.ylabel('Temp [deg C]')
plt.show() 

plt.savefig('plot_klima3.pdf')