You use evidently to show that you think something is true or have been told something is true, but that you are not sure, because you do not have enough information or proof.
1. unmistakably (`plain' is often used informally for `plainly');
"the answer is obviously wrong""she was in bed and evidently in great pain""he was manifestly too important to leave off the guest list""it is all patently nonsense""she has apparently been living here for some time""I thought he owned the property, but apparently not""You are plainly wrong""he is plain stubborn"