What is your device and iOS version? Furthermore, and more importantly, it would be more helpful to see app usage breakdown.
More than 9 hours of usage time is quite excellent if you use apps like, say, Facebook, YouTube, games, etc. extensively. Brightness and other setting configurations (number of notifications, background app refresh, location settings, etc) affect battery life. If you have all the settings as iOS default (not changed anything since you got your phone), then the battery life you are getting is really good.