You should drain it all the way down and show us your stats then. It doesnt help that your still have 61% charge left.
Seems okay to me though. My 4S on 7.0 (when I checked last night) had 26 hours standby and 6.5 hours of use, and it had 9% battery left. Your 5S should be better than my 2 year old 4S, I'm sure.
My room mate just got his 5S on Friday. I told him to charge it up, and drain it down and check his stats, but he has yet to do so, I'm curious as to what he will get, compared to my 4S.