Making subplots in matplotlib, then getting labels to appear at the bottom

gistfile1.txt

import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
plt.style.use('seaborn')
import numpy as np

nrows, ncols = 1, 2
fig, ax = plt.subplots(nrows, ncols, sharey=False, squeeze=True, figsize=(9*ncols, 6*nrows))
x = np.arange(100)
y0 = x + np.random.normal(loc=0.0, scale=10.0, size=100)
y1 = x + np.random.normal(loc=0.0, scale=10.0, size=100)
y2 = x + np.random.normal(loc=0.0, scale=5.0, size=100)
ax[0].plot(x, y2, ls='-', lw=4 ,color='blue')
l1, = ax[0].plot(x, y0, ls='-', lw=4 ,color='red')
l2, = ax[1].plot(x, y1, ls='-', lw=4, color='blue')
# Note: not sure why we need the comma here ...

fig.legend(
    handles=[l1, l2],
    labels=['Red Data', 'Blue Data'],
    loc='lower left',
    prop={'size': 30},
    bbox_to_anchor=(0.30, 0.0),
    ncol=2,
    shadow=True,
    frameon=True,
)

plt.tight_layout()
plt.subplots_adjust(bottom=0.20)
figname = f'plot_testpng'
plt.savefig(figname)