The comprehensive index calculated by the method emphasizes not only the contribution of the fractional indexes of higher class, but also the highest fractional index.

用该方法计算的综合指数不仅强调级数较高的分指数的作用，而且也适当突出最大分指数的贡献。

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However, Thursday's HSBC data showed exports had stabilised in January, with the export orders sub-index rising to 50.1 - indicating fractional expansion - up from 49.2 in December.

BBC: China manufacturing activity at two-year high, says HSBC