diff --git a/src/blockchain/orderlib.js b/src/blockchain/orderlib.js
index 3126467..fdc9ed1 100644
--- a/src/blockchain/orderlib.js
+++ b/src/blockchain/orderlib.js
@@ -82,8 +82,14 @@ export function newTranche({
                            } = {}) {
     if( minIntercept === 0 && minSlope === 0 && maxIntercept === 0 && maxSlope === 0 )
         marketOrder = true
-    if( marketOrder )
+    if( marketOrder ) {
+        if (minIntercept !== 0 || minSlope !== 0 || maxIntercept !== 0 || maxSlope !== 0)
+            console.warn('Ignoring line information in a market order')
         minIntercept = encodeIEE754(slippage)  // this is the slippage field for market orders
+        minSlope = 0
+        maxIntercept = 0
+        maxSlope = 0
+    }
     else {
         minIntercept = encodeIEE754(minIntercept)
         minSlope = encodeIEE754(minSlope)
diff --git a/src/charts/chart.js b/src/charts/chart.js
index 04592a7..c056d7d 100644
--- a/src/charts/chart.js
+++ b/src/charts/chart.js
@@ -387,7 +387,7 @@ function chartMeanRange() {
     for (let barIndex = bars.size() - 1; barIndex >= final; barIndex--) {
         count++
         const [_time, _open, high, low, _close, _volume, _ms] = bars.valueAt(barIndex)
-        range += (high - low)
+        range += Math.abs(high - low)
     }
     if (count > 0)
         range /= count
diff --git a/src/components/Status.vue b/src/components/Status.vue
index 0ea5d44..7f9ae4d 100644
--- a/src/components/Status.vue
+++ b/src/components/Status.vue
@@ -201,8 +201,6 @@ const orders = computed(()=>{
   //       [730643660, 0], [min intercept, slope]
   //       [0, 0],         [max intercept, slope]
   //       ],
-  //       [...],
-  //       [...],
   //     ]
   //   ],
   //   4,                state
@@ -210,8 +208,7 @@ const orders = computed(()=>{
   //   null,             oco group
   //   "0",              filled in
   //   "0",              filled out
-  //   ["0", "0", "0"],  tranche filled in
-  //   ["0", "0", "0"]   tranche filled out
+  //   [...],            trancheStatus
   // ]
   const result = []
 
diff --git a/src/orderbuild.js b/src/orderbuild.js
index 534373e..b62b2cf 100644
--- a/src/orderbuild.js
+++ b/src/orderbuild.js
@@ -178,11 +178,11 @@ export function applyLine(tranche, isMinimum, intercept, slope) {
     m = encodeIEE754(m)
     b = encodeIEE754(b)
     if (isMinimum) {
-        tranche.minIntercept = b;
-        tranche.minSlope = m;
+        tranche.minLine.intercept = b;
+        tranche.minLine.slope = m;
     } else {
-        tranche.maxIntercept = b;
-        tranche.maxSlope = m;
+        tranche.maxLine.intercept = b;
+        tranche.maxLine.slope = m;
     }
     tranche.marketOrder = false;
 }
diff --git a/src/socket.js b/src/socket.js
index 8379d87..dd73dc3 100644
--- a/src/socket.js
+++ b/src/socket.js
@@ -97,8 +97,8 @@ socket.on( 'of', (chainId, vault, orderIndex, filled)=>{
     status.filledOut = BigInt(filled[0][1])
     for( const i in filled[1] ) {
         const [filledIn, filledOut] = filled[1][i]
-        status.trancheFilledIn[i] = BigInt(filledIn)
-        status.trancheFilledOut[i] = BigInt(filledOut)
+        status.trancheStatus[i].filledIn = BigInt(filledIn)
+        status.trancheStatus[i].filledOut = BigInt(filledOut)
     }
     // s.orders[vault][orderIndex] = status
     console.log('applied fills', status)