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 Blitzball9.
Herblore 99 → 106, 12.6m XPOne check left: Herblore 99 → 106, 12.6m XP. Quests need a public profile, so the quest checks are left out of the score.