$this->source, 'sessions' => (int) $this->sessions, 'bounce_rate' => $this->sessions > 0 ? round(($this->bounces / $this->sessions) * 100, 1) : 0, 'avg_duration' => round((float) ($this->avg_duration ?? 0), 1), 'avg_pages' => round((float) ($this->avg_pages ?? 0), 1), ]; } }