diff --git a/src/App.tsx b/src/App.tsx
index 9c57043..c3c7bd0 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -40,6 +40,8 @@ import {
   getSum
 } from "./math";
 import { throttle } from "lodash";
+// Data
+import { u_min_t, u_max_t } from "./u_values";
 // General styles
 import "./app.css";
 
@@ -273,7 +275,9 @@ export default function App() {
           const R_ratio = getR({ S: S - H, V0, k }) / R;
           u_lower = Math.max(1 - R_ratio, u_min);
         }
-        const priceGrowth = rv_U(u_lower, u_max);
+        let priceGrowth = rv_U(u_lower, u_max);
+        // #### DEMO
+        priceGrowth = rv_U(u_min_t[t], u_max_t[t]);
 
         const deltaR = getDeltaR_priceGrowth({ R, k, priceGrowth });
         const R_next = R + deltaR;
diff --git a/src/u_values.tsx b/src/u_values.tsx
new file mode 100644
index 0000000..18a91ff
--- /dev/null
+++ b/src/u_values.tsx
@@ -0,0 +1,114 @@
+const low_u = 0.97;
+const high_u = 1.07;
+const dump = 0.75;
+
+export const u_min_t = [
+  1,
+  0.8,
+  0.8,
+  0.9,
+  0.9,
+  0.8,
+  0.6,
+  0.5,
+  0.8,
+  0.9,
+  0.9,
+  low_u,
+  low_u,
+  low_u,
+  0.8,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  low_u,
+  low_u,
+  low_u,
+  dump,
+  low_u,
+  low_u,
+  low_u,
+  low_u,
+  low_u,
+  0.97
+];
+
+export const u_max_t = [
+  3,
+  1.5,
+  1.01,
+  1.04,
+  1.1,
+  1.15,
+  1.15,
+  1.15,
+  1.1,
+  1.1,
+  1.2,
+  1.15,
+  high_u,
+  high_u,
+  1.3,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  1.3,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  1.2,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  1.4,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  high_u,
+  1.04
+];