diff --git a/package.nw/lib/gt.js b/package.nw/lib/gt.js
index eb8ed91c..45a88243 100644
--- a/package.nw/lib/gt.js
+++ b/package.nw/lib/gt.js
@@ -10712,20 +10712,22 @@ function renderBandActivity()
           if (band in bandData)
           {
             var place = bandData[band];
+            var data = g_oamsBandActivityData[grid][band];
 
-            place.oamsDecodes += g_oamsBandActivityData[grid][band].d;
-            place.oamsRxSpots += g_oamsBandActivityData[grid][band].rS;
-            place.oamsTxSpots += g_oamsBandActivityData[grid][band].tS;
-            place.oamsTx += g_oamsBandActivityData[grid][band].t;
-            place.oamsRx += g_oamsBandActivityData[grid][band].r
+            place.oamsScore ??= 0;
+            place.oamsDecodes += data.d;
+            place.oamsRxSpots += data.rS;
+            place.oamsTxSpots += data.tS;
+            place.oamsTx += data.t;
+            place.oamsRx += data.r;
 
-            if (place.oamsRx > 0)
+            if (data.r > 0)
             {
-              place.oamsScore = parseInt((place.oamsDecodes > place.oamsRxSpots) ? (place.oamsDecodes / place.oamsRx) + (place.oamsTx > 0 ? place.oamsTxSpots / place.oamsTx : 0) : (place.oamsRxSpots / place.oamsRx) + (place.oamsTx > 0 ? place.oamsTxSpots / place.oamsTx : 0));
+              place.oamsScore += parseInt((data.d > data.rS) ? (data.d / data.r) + (data.t > 0 ? data.tS / data.t : 0) : (data.rS / data.r) + (data.t > 0 ? data.tS / data.t : 0));
             }
             else
             {
-              place.oamsScore = parseInt(place.oamsTx > 0 ? place.oamsTxSpots / place.oamsTx : 0);
+              place.oamsScore += parseInt(data.t > 0 ? data.tS / data.t : 0);
             }
             if (maxValue < place.oamsScore) maxValue = place.oamsScore;
           }