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 MunkeyBrain.
Herblore 1 → 96, 9.7m XP
Prayer 1 → 95, 8.8m XP
Summoning 1 → 96, 9.7m XPWeakest area: Combat stats. Best style is Melee at 6, 90 is the usual bar. Quests need a public profile, so the quest checks are left out of the score.