How to use colorbar in subplot

Hi, I need to add a colorbar to each plot in a subplot but cant seem to get
it to work. My code is as follows,

# Plot time series of slowness, baz, abs.power and rel.power
labels = 'rel.power abs.power baz slow'.split()

fig = plt.figure()
for i, lab in enumerate(labels):
    ax = fig.add_subplot(4, 1, i + 1)
    ax.scatter(out[:, 0], out[:, i + 1], c=out[:, 1], alpha=0.6,
fig.subplots_adjust(top=0.95, right=0.95, bottom=0.2, hspace=0.25)

Dont get any error but the colorbar is missing from the plot, anyone know
how it is done???


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