What do the signs (+/-) in Bernoulli's equation represent in fluid mechanics?

[simpsonsruler]

Hello, everybody! I have lurked on these forums in the past, but now am happy to actually be participating in the discussion after I found a lovely comment explaining the signs (+/-) in Bernoulli's equation for fluid mechanics. Happy physics-ing! :)

 

[jedishrfu]

Welcome to PF!

 

[simpsonsruler]

Thank you!