請問下封信件的內容所需要的資料需要追溯幾年?分組的級距 是240000

請問下封信件的內容
所需要的資料需要追溯幾年?
分組的級距 是240000-30000, 30000-50000,>50000 unit
抑或有更適合的分組?

結果 (英文) 1:

Will the contents of letters of
the required information needed traceability years?
Packet level distance is 240000-30000, 30000-50000,> 50000 unit
or are there more suitable grouping?

結果 (英文) 2:

Please ask the contents of the next letter
How many years does the required data need to be traced back?
The level of the group is 240000-30000, 30000-50000, 50000 unit Or is there a more suitable grouping?

結果 (英文) 3:

What is the next letter
How many years does the required data need to be traced back?
The interval between groups is 240000-30000, 30000-50000, > 50000 unit.
Or is there a better grouping?