NUMBER OF OBSERVATIONS Of the 769 cases 481 cases happened in all individual days. Correspondingly 288 tornadoes occurred in days there was at least another tornado outbreak during the same calendar day. While study approach was quite simple because of the limitation of the sample size the ”styngdpunkt” (the emphasis) was to secure the reliability with longer measures like within limits of 24 hours first. The research perspective was as follows: ”Are there recognisable similarities between (asynchronic) time cycles during tornado touchdown?” I.e. are tornadoes recognisable according The Theory of Sequences. To guarantee unbiased results all of the data which had overlap for a same calendar day was excluded. Only one observation (randomly selected) was accepted of each calendar day to enter to the analysed group. The limitation of the somewhat small sample size made evident subgroups was limited, value of study.
Tornadotulokista osa 4
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