diff --git a/rowers/interactiveplots.py b/rowers/interactiveplots.py
index d697eba6..94a4548b 100644
--- a/rowers/interactiveplots.py
+++ b/rowers/interactiveplots.py
@@ -403,6 +403,34 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
     if rowdata.empty:
         return "","No Valid Data Available","",""
 
+
+    # quick linear regression
+    # peakforce = slope*peakforceangle + intercept
+    slope, intercept, r,p,stderr = linregress(rowdata['peakforceangle'],rowdata['peakforce'])
+    theta = np.arctan(slope)
+
+    a = rowdata['peakforceangle']-rowdata['peakforceangle'].mean()
+    F = rowdata['peakforce']-rowdata['peakforce'].mean()
+
+    R = np.array([[np.cos(theta),np.sin(theta)],
+                  [-np.sin(theta),np.cos(theta)]])
+    Rinv = np.array([[np.cos(theta),np.sin(theta)],
+                     [-np.sin(theta),np.cos(theta)]])
+
+    x = R[0,0]*a+R[0,1]*F
+    y = R[1,0]*a+R[1,1]*F
+
+
+    x05 = x.quantile(q=0.05)
+    x25 = x.quantile(q=0.25)
+    x75 = x.quantile(q=0.75)
+    x95 = x.quantile(q=0.95)
+    
+    y05 = y.quantile(q=0.05)
+    y25 = y.quantile(q=0.25)
+    y75 = y.quantile(q=0.75)
+    y95 = y.quantile(q=0.95)
+
     try:
         catchav = rowdata['catch'].mean()
     except KeyError:
@@ -427,6 +455,7 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
     except KeyError:
         peakforceav = 0
 
+    
     try:
         averageforceav = rowdata['averageforce'].mean()
     except KeyError:
@@ -436,6 +465,19 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
         peakforceangleav = rowdata['peakforceangle'].mean()
     except KeyError:
         peakforceangleav = 0
+        
+    peakforceangle05 = rowdata['peakforceangle'].quantile(q=0.05)
+    peakforce05 = rowdata['peakforce'].quantile(q=0.05)
+    
+    peakforceangle25 = rowdata['peakforceangle'].quantile(q=0.25)
+    peakforce25 = rowdata['peakforce'].quantile(q=0.25)
+    
+    peakforceangle75 = rowdata['peakforceangle'].quantile(q=0.75)
+    peakforce75 = rowdata['peakforce'].quantile(q=0.75)
+    
+    peakforceangle95 = rowdata['peakforceangle'].quantile(q=0.95)
+    peakforce95 = rowdata['peakforce'].quantile(q=0.95)
+
 
     x = [catchav,
          catchav+slipav,
@@ -455,11 +497,31 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
             y = y,
         ))
 
+    sourcetrend = ColumnDataSource(
+        data = dict(
+            x = [peakforceangle25,peakforceangle75],
+            y = [peakforce25,peakforce75]
+            )
+        )
+
+    sourcefit = ColumnDataSource(
+        data = dict(
+            x = rowdata['peakforceangle'],
+            y = slope*rowdata['peakforceangle']+intercept
+            )
+        )
     
     source2 = ColumnDataSource(
         rowdata
         )
 
+    sourcepoints = ColumnDataSource(
+        data = dict(
+            peakforceangle = rowdata['peakforceangle'],
+            peakforce = rowdata['peakforce']
+            )
+        )
+
     plot = Figure(tools=TOOLS,
                   toolbar_sticky=False,toolbar_location="above")
 
@@ -493,7 +555,10 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
     avf = Span(location=averageforceav,dimension='width',line_color='blue',
                line_dash=[6,6],line_width=2)
     
+    plot.circle('peakforceangle','peakforce',source=sourcepoints,color='cyan')
     plot.line('x','y',source=source,color="red")
+    plot.line('x','y',source=sourcetrend,color="blue")
+    plot.line('x','y',source=sourcefit,color="green")
 
     plot.add_layout(avf)
     
@@ -585,6 +650,7 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
     callback = CustomJS(args = dict(
         source=source,
         source2=source2,
+        sourcepoints=sourcepoints,
         avf=avf,
         avflabel=avflabel,
         catchlabel=catchlabel,
@@ -598,6 +664,7 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
     ), code="""
        var data = source.data
        var data2 = source2.data
+       var datapoints = sourcepoints.data
                                
        var x = data['x']
        var y = data['y']
@@ -636,11 +703,15 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
        var peakforceav = 0
        var count = 0
 
+       datapoints['peakforceangle'] = []
+       datapoints['peakforce'] = []
 
       for (i=0; i<c.length; i++) {
           if (spm1[i]>=minspm && spm1[i]<=maxspm) {
              if (distance1[i]>=mindist && distance1[i]<=maxdist) {
                 if (driveenergy1[i]>=minwork && driveenergy1[i]<=maxwork) {
+                   datapoints['peakforceangle'].push(peakforceangle[i])
+                   datapoints['peakforce'].push(peakforce[i])
                    catchav += c[i]
                    finishav += finish[i]
                    slipav += slip[i]
@@ -677,6 +748,7 @@ def interactive_forcecurve(theworkouts,workstrokesonly=False):
  
        // source.trigger('change');
        source.change.emit();
+       sourcepoints.change.emit();
        """)
 
     annotation = TextInput(title="Type your plot notes here", value="",