Consulting the Codex…
RS3 · Skills · Activities · Quests
The Codex keeps its readings for 400 days, so you can go back that far, to the first day it read PheonixYao.
Herblore 83 → 96, 7.0m XP
Prayer 67 → 95, 8.2m XP
Summoning 57 → 96, 9.5m XPWeakest area: Combat stats. Best style is Necromancy at 87, 90 is the usual bar. Quests need a public profile, so the quest checks are left out of the score.