TDR plot of a PCB trace seems tilted

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时间：03-30 整理：3721RD 点击：

Hi,

I got a simulated TDR plot of a signal on my PCB, and it looks tilted.
The flat lines that represent traces between the discontinuities should be constant impedance which means horizontal.
But for some reason the flat parts have an angle to the horizontal axis.
Why is that?

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