Update app.py

app.py

@@ -489,7 +489,7 @@ def show_temperature_graph(data):
             index = times.index(time)
             fig.add_annotation(
                 x=time,
-                y=min(temps),
+                y=min(temps) - 3,
                 text=time,
                 showarrow=False,
                 font=dict(size=30, color="black", family="Arial")