help buttom

src/app/pages/tecnalia-module/bike-trajectory/bike-trajectory.component.html

 <div id="page" class="row">
     <div class="col-md-10">
-        <button style="top:65px;right:20px;position:absolute"  (click)="openInstructions()"> Help</button>
+        <button style="top:65px;right:20px;position:absolute;z-index:10000;"  (click)="openInstructions()"> Help</button>
         <div id="vel_tab" style="display:none">
          # Trajs <material-slide-toggle [(checked)]="toggleLbls" (change)="tooltipChange();">Sensor Labels</material-slide-toggle> Speed
         </div>
@@ -68,6 +68,9 @@
                     on top of the map. In the case of Amsterdam use case the points are fully aggregated in time and there is possibility
                     of choosing the day yet until more data is avaiable.
                 </p>
+                <p> In the case of Amsterdam use case, the points are aggregated over all the period of time avaiable with the switch on the top-right
+                    changing from number of trajectories to average speed at the different locations.
+                </p>
 
             </div>
         </div>