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 bat pk wyrm.
Herblore 96 → 106, 16.3m XP
Prayer 92 → 95, 2.2m XP
Summoning 85 → 96, 6.4m XPWeakest area: Prayers. Prayer 92 → 95, 2.2m XP. Quests need a public profile, so the quest checks are left out of the score.