diff --git a/lib/microwaveprop_web/live/about_live.ex b/lib/microwaveprop_web/live/about_live.ex
index 779a9369..8bf1c546 100644
--- a/lib/microwaveprop_web/live/about_live.ex
+++ b/lib/microwaveprop_web/live/about_live.ex
@@ -81,12 +81,13 @@ defmodule MicrowavepropWeb.AboutLive do
             </li>
           </ol>
           <p>
-            The scoring is a weighted sum of nine factors: humidity, time of
-            day, T–Td depression, refractivity gradient, sky cover, season, rain,
-            wind, pressure. The weights are band-dependent because the physics
-            changes as you go up: humidity helps at 10 GHz (more refractivity)
-            and hurts at 24+ GHz (absorption). Every coefficient is a hypothesis
-            I'm checking against the contact and beacon data.
+            The scoring is a weighted sum of ten factors: rain, humidity,
+            precipitable water (PWAT), season, refractivity gradient, pressure,
+            T–Td depression, sky cover, wind, and time of day. Weights were
+            calibrated via gradient descent against 5,000 QSOs. The physics
+            changes by frequency: humidity helps at 10 GHz (more refractivity)
+            and hurts at 24+ GHz (absorption). Refractivity now uses native
+            HRRR hybrid-sigma levels (10–50 m resolution) for duct detection.
           </p>
         </div>