+```python
+ax = doubling_times[C7s].plot(figsize=(10, 6), title="Doubling times")
+for c in C7s:
+ lvi = doubling_times[c].last_valid_index()
+ ax.text(x = lvi + 1, y = doubling_times[c][lvi], s = c)
+# plt.savefig('covid_doubling_times_friends.png')
+```
+
+```python
+# deaths_diff_m4 = (data_since_threshold.loc[(slice(None), COUNTRIES_ALL), ['deaths_diff_m4']]
+# .unstack().sort_index().xs('deaths_diff_m4', axis=1, drop_level=True))
+```
+
+```python
+# deaths_diff_m7 = (data_since_threshold.loc[(slice(None), COUNTRIES_ALL), ['deaths_diff_m7']]
+# .unstack().sort_index().xs('deaths_diff_m7', axis=1, drop_level=True))
+```
+
+```python
+# deaths_diff_m7
+```
+