The reason why the X-axis ticks are displayed in thousands is because of a range adjustment.

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When displaying data with very large or very small values, it may be appropriate to adjust the range of the x-axis to make the data easier to read. One common way to do this is to display ticks in units of thousands, millions, billions, etc. This can help to reduce clutter on the axis and make it easier to compare data points. Additionally, using a logarithmic scale may be appropriate in some cases to better display data that spans a large range of values.