I received 0.441 SP, not sure what I had in my voting power at that time, I think maybe 20,000 SP.
Of the 8 votes I made that day it was the biggest reward and I usually vote after 15 mins.
Here's a link https://steemdb.com/@fiveboringgames/curation/2017-10-04
it a good site and you may be able to gleam more info
Great thanks for checking up. So from 1 minute onwards is earning curation, good to know, cheers.