Probabilities of occurrence for first four digits according to the Newcomb-Benford law.

Notes: Decimal points omitted. First and second digits' probabilities as given in Newcomb(1881), third and fourth digits' probabilities supplemented.备注：省略小数点。首位与次位数字的概率取自纽科姆（Newcomb, 1881），第三位与第四位数字的概率为补充所得。