Graph plotting part consists of histogram, cross section drawing, clustering spectral pattern, 2-dimensinoal factor scattergram.

图形绘制包括：直方图、因子平面散点图、聚类谱系图、剖面图。

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Since small deviations are common and large ones are rare, the result of plotting data in this way is a curve shaped somewhat like the cross-section of a bell.

ECONOMIST: Climate change