Thanks. It is a bit hard to see the blue arc in the image so I've thickened up the blue trace width and plotted it again without the markers. The top of the blue arc corresponds with the start frequency of 1 MHz and the bottom of the arc corresponds with the stop frequency of 2 MHz.?
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1.45 MHz is roughly at the centre of the arc at 3 o'clock on the smith chart (very close to being an open circuit).
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