# -*- coding: utf-8 -*-

 import numpy as np

 import matplotlib.pyplot as plt

 from matplotlib import rc

 rc('mathtext', default='regular')

 time = np.arange(10)

 temp = np.random.random(10)*30

 Swdown = np.random.random(10)*100-10

 Rn = np.random.random(10)*100-10

 fig = plt.figure()

 ax = fig.add_subplot(111)

 ax.plot(time, Swdown, '-', label = 'Swdown')

 ax.plot(time, Rn, '-', label = 'Rn')

 ax2 = ax.twinx()

 ax2.plot(time, temp, '-r', label = 'temp')

 ax.legend(loc=0)

 ax.grid()

 ax.set_xlabel("Time (h)")

 ax.set_ylabel(r"Radiation ($MJ\,m^{-2}\,d^{-1}$)")

 ax2.set_ylabel(r"Temperature ($^\circ$C)")

 ax2.set_ylim(0, 35)

 ax.set_ylim(-20,100)

 ax2.legend(loc=0)

 plt.savefig('0.png')

 # -*- coding: utf-8 -*-

 import numpy as np

 import matplotlib.pyplot as plt

 from matplotlib import rc

 rc('mathtext', default='regular')

 time = np.arange(10)

 temp = np.random.random(10)*30

 Swdown = np.random.random(10)*100-10

 Rn = np.random.random(10)*100-10

 fig = plt.figure()

 ax = fig.add_subplot(111)

 lns1 = ax.plot(time, Swdown, '-', label = 'Swdown')

 lns2 = ax.plot(time, Rn, '-', label = 'Rn')

 ax2 = ax.twinx()

 lns3 = ax2.plot(time, temp, '-r', label = 'temp')

 # added these three lines

 lns = lns1+lns2+lns3

 labs = [l.get_label() for l in lns]

 ax.legend(lns, labs, loc=0)

 ax.grid()

 ax.set_xlabel("Time (h)")

 ax.set_ylabel(r"Radiation ($MJ\,m^{-2}\,d^{-1}$)")

 ax2.set_ylabel(r"Temperature ($^\circ$C)")

 ax2.set_ylim(0, 35)

 ax.set_ylim(-20,100)

 plt.savefig('0.png')

 # -*- coding: utf-8 -*-

 import numpy as np

 import matplotlib.pyplot as plt

 x = np.linspace(0,10)

 y = np.linspace(0,10)

 z = np.sin(x/3)**2*98

 fig = plt.figure()

 ax = fig.add_subplot(111)

 ax.plot(x,y, '-', label = 'Quantity 1')

 ax2 = ax.twinx()

 ax2.plot(x,z, '-r', label = 'Quantity 2')

 fig.legend(loc=1)

 ax.set_xlabel("x [units]")

 ax.set_ylabel(r"Quantity 1")

 ax2.set_ylabel(r"Quantity 2")

 plt.savefig('0.png')

 # -*- coding: utf-8 -*-

 import numpy as np

 import matplotlib.pyplot as plt

 x = np.linspace(0,10)

 y = np.linspace(0,10)

 z = np.sin(x/3)**2*98

 fig = plt.figure()

 ax = fig.add_subplot(111)

 ax.plot(x,y, '-', label = 'Quantity 1')

 ax2 = ax.twinx()

 ax2.plot(x,z, '-r', label = 'Quantity 2')

 fig.legend(loc=1, bbox_to_anchor=(1,1), bbox_transform=ax.transAxes)

 ax.set_xlabel("x [units]")

 ax.set_ylabel(r"Quantity 1")

 ax2.set_ylabel(r"Quantity 2")

 plt.savefig('0.png')