Problem description & analysis:

Here below is a data table:

Task: Group the data in the first column, and calculate the sum of the values in the second column of each group. Grouping criteria: when there is a difference of 5 or more between the current data and previous one, create a new group.

Solution:

Use SPL XLL and enter the following formula:

=spl("=E@b(?1).group@i(#1-#1[-1]>=5).new(#1:ID,~.sum(#2):Total)",A1:B12)

The results are as follows:

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