Scientific Numbers in Logstash - How to handle them? Need help

Hi there,
I have found below mentions post which is a bit helpfull but I dont know how to split a Scientific Notation and merge them afterwards
A few examples of the numbers I want to handle or to learn how to handle in logstash:


I tried also with grok but not yet found the right way:

(?<name-of-field>[([0-9] [+\-]? [0-9])]+)

Hope you can help me
Thanks and regards

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