What about the arrowhead tree structure? Is there a similar plug-in?

now there is a requirement to do a tree structure of arrowhead type. I found a lot of tree structure plug-ins on the Internet, but none of them worked! I hope all brothers can give us some advice!

Mar.28,2021

it's hard to do this, mainly because some time intervals are so close that you may have to use floats to do it. Calculate your own height


where are you dissatisfied? The time interval is not appropriate? Or what?
this structure should be relatively simple if the time interval is not considered.

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MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3d0e2-34712.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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