My goal is to know what is the reason why the new blocks that are generated in the blockchain there is a difference of different seconds in the reception of these in different wallets. (Sorry for my english I'm dyslexic)

Hi guys, I need help about what does mean and how works peers.  I like know more information about this topic for developing.

I like know more about "Node/Service", "User Agent", and "Ping Time". What is their function in the wallet And what is their use with blockchain new bocks.


Thanks for your helping)