Selection Tool and Its Usage
Abstract
In this paper features of radiation are studied, which may be used selecting its alternating fragments. Among studied features are deviation and standard deviation from the moving average value of irradiance, sum of increments and difference between envelopes of the recorded dataset. The analysis has been made using EXCEL worksheets and its standard functions. Preferred feature for the selecting is deviation, which exceeds the conceded value. This approach minimizes the computation and allows selecting previously recorded datasets. Method of data selecting has been used for analysis of alternating radiation in Estonian summer in seasons 1999 -2002, which has a high share - 50% of the daytime.