changing default sigfigs in app to 2 (#74)

* changing default sigfigs

* ngm table has sigdigs

ngm/app.py

@@ -152,6 +152,9 @@ def summarize_scenario(
         .with_columns(pl.Series("", [f"to {grp}" for grp in params["group_names"]]))
         .select(["", *[f"from {grp}" for grp in params["group_names"]]])
     )
+    ngm_df = ngm_df.with_columns(
+        [pl.col(col).round_sig_figs(sigdigs) for col in ngm_df.columns[1:]]
+    )
     c.dataframe(ngm_df)
     c.write(ngm_help)
 
@@ -287,8 +290,8 @@ def app():
             sigdigs = st.slider(
                 "Displayed significant figures",
                 1,
-                4,
-                value=3,
+                3,
+                value=2,
                 step=1,
                 help="Values are reported only to this many significant figures.",
             )