Scatterplot

# model
t_min = data.index.min()
t_max = pd.Timestamp('2015-01-01')

plt.figure(figsize=(18,5))
plt.xlim(t_min, t_max)

location_filter = data.location == 'Fitzroy Gardens'
time_filter     = data.index < t_max
data_filtered   = data[location_filter & time_filter]
#boards          = data_filtered.boardid.unique()

plt.plot(data_filtered.index, data_filtered.temp_avg, ',', c='g', alpha=.9)
plt.show()