We have also calculated the mean daily variation of Kindex of 31 stations of high latitude during the relative magnetic quiet period of year 1957 and 1958.
与此同时，我们还统计了1957与1958年高纬度区31个地磁台在平静时每天的平均日变化。
2
The relation of linear ablative rate (ar), ablative heat insulating property index (API) and structure constant (K) to ablative heat insulating property were studied in this paper.
A kind of K drought index and its criterion are made by using spring precipitation and evaporation data of 140 stations in Northwest China from 1971-2000.