t.lastDayMu.Lock()
	defer t.lastDayMu.Unlock()

	if _, ok := t.lastDayStats[tier]; !ok {
		t.lastDayStats[tier] = &lastDayTierStats{}
	}
	t.lastDayStats[tier].addStats(ts)
}

func (t *transitionState) getDailyAllTierStats() DailyAllTierStats {
	t.lastDayMu.RLock()
	defer t.lastDayMu.RUnlock()

	res := make(DailyAllTierStats, len(t.lastDayStats))

		if t.RegionID == 0 && t.ScriptID != 0 && t.LangID != 0 {
			base, _ := addTags(Tag{LangID: t.LangID})
			if base.ScriptID == t.ScriptID {
				return Tag{LangID: t.LangID}
			}
		}
		return t
	}
	if t.LangID != 0 {
		if t.RegionID != 0 {
			maxScript := t.ScriptID
			if maxScript == 0 {
				max, _ := addTags(t)
				maxScript = max.ScriptID
			}

			for i := range parents {