Thank you for that.
Let me just follow up on the weather problem. You were saying that -25°C is a tipping point in terms of, let's call it, efficient operation and in terms of train length and air-brake use. Can you perhaps give the committee an indication of what sort of train length you are moving when you're in the 0°C to -25°C zone, and what length you are moving when you are below that, in the -25°C to -30°C zone? What percentage of cars are you losing on that?