最中に => while; during; in the middle of ~ N3
の上で(は)/~上 => according to; from the viewpoint of ~ N2
上 => In terms of... N1
Position, perspective
〜がさいご(が最後) => if you do... negative result N1
Decisive (resolute decision)
以上 (の) => Just mentioned above N1
Standard
上げる => to finish doing ~ N3
その上 => besides; in addition; furthermore ~ N3
以上(は) => because; since; seeing that ~ N2
[最中「さいちゅう」] => In the middle of A N3
Time, Situation
たが[最後「さいご」] => Once A occurs, B happens N1
Information, Report
上は => now that; since; as long as ~ N2
上で => upon; after; when; for; in order to N2