Introduction - If you have any usage issues, please Google them yourself
Synthesis of vector demand vector f (n, 2) the index of x (n) for the high-index on (x (n)> coefh of the year) average fh (2), low index on (x (n) <coefh的年)的平均值fl(2)、高指数年与气候平均的合成差dh(2)、低指数年与气候平均的合成差dl(2)、以及高低指数年的合成差dhl(2)和差的显著性tn(5)。