Background and objective

I have data that is organised as follows:

In Tableau, I want to be able to plot the average of the maximum times for each `Destination` column, for each type of transport.

So,

• For Time_heli, the maximum time to LocX is 8 (out of 7 and 8)
• The maximum time to LocY is 5
• The average of those two is 6.5

This produces something this after repeating for Time_car and Time_jet:

I am using Tableau 10.5.4 version on Windows 8

Approach

To do this, I will get the maximum times for each Place by creating a new field for each type of transport with:

{FIXED Place,Option: MAX([Time_Car])}
{FIXED Place,Option: MAX([Time_Jet])}
{FIXED Place,Option: MAX([Time_Heli])}

However, this won't allow me plot the data in one chart on Tableau.

How can I achieve the chart above?