Paris to Lyon Train Timetable
I personally found this chart hard to read in its original form. I've added some buttons below the chart to make it easier to navigate. The first changes the colour of the gridlines, bringing the data to the fore. The next adds some colour to the lines to help distinguish between them, in this case colouring by the type of train, and the last button overlays one of the original trains from the 1880s so you can see how much faster the modern trains are.